News
Southern Ocean Salinity Shift & Global Climate Impacts
I recently came across compelling content on TikTok where people from various fields were discussing unprecedented changes in the Southern Ocean, using phrases like ‘never seen before’ and ‘catastrophic tipping point.’ As usual when something sparks my interest on social media, I knew I needed to dig deeper into the peer-reviewed science behind these claims. What I discovered was far more concerning than the initial posts suggested.
What I discovered was that the Southern Ocean, that vast body of water surrounding Antarctica, has undergone a fundamental transformation that challenges everything we thought we understood about polar marine systems. Since 2016, something extraordinary and deeply troubling has been happening in the most remote waters on Earth.
Is It That Scary?
To be clear, we’re not talking about ocean currents literally reversing direction, but rather fundamental changes in ocean salinity that are disrupting the natural circulation patterns and density layers that have existed for millennia.
For decades, the surface waters of the Southern Ocean had been doing exactly what climate scientists expected them to do in a warming world: they were getting fresher. Melting ice and increased precipitation were diluting the salt content, creating a stable layered ocean structure that helped maintain sea ice cover. This freshening process was so consistent that it became a cornerstone of our climate models.
Then, around 2015, everything changed.
New satellite data from the European Space Agency’s SMOS mission, combined with underwater robotic floats, revealed something that caught the entire scientific community off guard. The Southern Ocean’s surface waters began getting saltier at an alarming rate. Not slightly saltier, not gradually saltier, but dramatically and rapidly saltier. This reversal has continued unabated, marking what researchers are calling a fundamental shift to a new ocean state never observed in the modern era.
Dr. Alessandro Silvano from the University of Southampton, who led the groundbreaking study published in the Proceedings of the National Academy of Sciences, described the findings as “astonishing.” The implications extend far beyond Antarctica. When ocean surface waters become saltier, they become denser and heavier, causing them to sink more readily. This breaks down the ocean’s natural layering system, allowing warm water from the depths to rise to the surface in a dangerous feedback loop that accelerates ice loss.
Since 2015, Antarctica has lost sea ice equivalent to the size of Greenland. Unlike typical seasonal variations, this ice has not returned, representing the largest environmental change on our planet in the past decade. The loss coincided perfectly with the salinity increase, providing what scientists call a “coherent explanation” for the rapid Antarctic sea ice decline that had previously puzzled researchers.e
Why This Changes Everything We Know
The research published in PNAS by Dr. Silvano’s team used data from multiple sources including the European Space Agency’s SMOS satellite mission and autonomous underwater floats, providing robust evidence for these unprecedented changes.
The Southern Ocean is like a massive layered cake. Normally, cold, fresh surface water sits on top of warmer, saltier deep water. This stratification acts like a lid, trapping heat in the ocean depths and keeping surface waters cool enough for sea ice to form and persist.
When surface waters become saltier, this balance collapses. The denser salty water sinks, stirring up the ocean layers and allowing centuries-old deep water to rise. This deep water carries with it not just heat, but also carbon dioxide that has been locked away in the ocean depths for hundreds of years. The result is a vicious cycle: saltier water brings more heat to the surface, which melts more ice, which allows more solar energy to be absorbed rather than reflected, which brings even more heat to the surface.
We witnessed this process firsthand with the return of the Maud Rise polynya in 2016-2017, a gaping hole in the sea ice nearly four times the size of Wales that hadn’t appeared since the 1970s. These polynyas are like windows into the future, showing us what a Southern Ocean without stable sea ice might look like.
The transformation extends beyond the immediate Antarctic region. The Southern Ocean plays a crucial role in the global conveyor belt of ocean currents, helping to regulate planetary heat distribution and carbon storage. Changes here send ripple effects throughout the entire global ocean system, potentially affecting weather patterns, marine ecosystems, and climate stability as far away as Europe and North America.
Is There A Fix?
This is the question that haunts every marine scientist studying this phenomenon: is there anything humanity can do to halt or reverse this process? The short answer is deeply unsettling.
Unlike some environmental problems that can be addressed through direct intervention, the Southern Ocean’s transformation appears to be beyond our immediate control. We cannot simply remove salt from vast ocean areas or artificially restore the layered structure that took millennia to develop. The scale is too immense, the processes too fundamental, and our technological capabilities too limited.
Some researchers have explored theoretical geoengineering solutions, including marine cloud brightening, which involves spraying seawater particles into the atmosphere to create reflective clouds that could cool ocean surfaces. However, these interventions come with their own risks and uncertainties. Studies suggest that large-scale cloud brightening could disrupt natural weather patterns, potentially causing droughts in some regions while failing to address the underlying ocean chemistry changes.
Ocean fertilization, another proposed intervention, involves adding nutrients to stimulate phytoplankton growth and carbon absorption. But the Southern Ocean’s remote location, harsh conditions, and complex ecosystem dynamics make such approaches extremely challenging to implement safely. Moreover, the effectiveness of these techniques in addressing salinity-driven circulation changes remains highly uncertain.
The harsh reality is that the Southern Ocean operates on timescales and spatial scales that dwarf human intervention capabilities. The water masses involved have been circulating for centuries, and the energy contained in these systems is beyond anything we could hope to manipulate with current technology.
The Reality We’re All Going to Face
The implications of the Southern Ocean’s transformation stretch far into the future, creating a cascade of consequences that will reshape life on Earth. I have a strange feeling that we are entering uncharted territory.
The immediate effects are already visible and accelerating. Antarctic sea ice acts like a giant mirror, reflecting roughly 80% of incoming solar radiation back into space. Without this reflective surface, the dark ocean absorbs that energy instead, driving further warming in a self-reinforcing loop. This process is contributing to more intense storms, altered precipitation patterns, and accelerated melting of the Antarctic ice sheet itself.
Sea level rise, already a critical concern, will accelerate as both thermal expansion and ice sheet melting increase. Coastal cities from Miami to Mumbai will face increasingly frequent flooding, while small island nations may become uninhabitable within decades. The economic costs of adaptation and relocation will reach into the trillions of dollars.
Marine ecosystems face unprecedented disruption. Emperor penguins, which depend on stable sea ice for breeding, are already showing population declines. Krill, the tiny crustaceans that form the foundation of the Antarctic food web, rely on sea ice for their life cycle. Their decline will cascade upward through the food chain, affecting everything from whales to commercial fisheries.
Perhaps most concerning is the potential release of ancient carbon. The upwelling of deep, carbon-rich waters could eventually double atmospheric CO2 concentrations by releasing carbon that has been stored in the deep ocean for centuries. While this process would unfold over many decades, it represents a ticking time bomb that could overwhelm our efforts to reduce emissions.
When combined with other marine crises I encounter daily in my conservation work, from ocean acidification to plastic pollution, coral bleaching to overfishing, the Southern Ocean changes paint a picture of a planet in ecological freefall. Our oceans, which have buffered humanity from the worst effects of climate change by absorbing heat and carbon, are reaching their limits.
The most troubling aspect may be how this discovery exposes the gaps in our understanding. If we failed to predict this fundamental shift in one of Earth’s most important ocean systems, what other surprises await us? Climate models that policymakers rely on for planning may be systematically underestimating the pace and severity of coming changes.
Yet even in the face of this daunting reality, we cannot afford despair. The Southern Ocean crisis underscores the absolute urgency of rapid decarbonization. Every fraction of a degree of warming matters, every year of delay multiplies the consequences, and every action we take to reduce emissions helps determine how severe these changes become.
We also need massive investments in ocean monitoring and research. The satellite systems and robotic floats that revealed this transformation are threatened by funding cuts just when we need them most. Understanding these changes is our early warning system for an increasingly unstable planet.
The Southern Ocean has sent us a clear signal that we have crossed a critical threshold. The choice, quite literally, is in our hands.
Written by: Junior Thanong Aiamkhophueng
Featured Image Photo Credit: © Larissa Beumer / Greenpeace

References:
- Silvano, A., et al. (2025). “Rising surface salinity and declining sea ice: A new Southern Ocean state revealed by satellites.” Proceedings of the National Academy of Sciences.
- Institut de Ciències del Mar (ICM-CSIC). (2025). “A change in the Southern Ocean structure can have climate implications.”
- Newsweek. (2025). “Fact Check: Did an Ocean Current Reverse?”
- The Conversation. (2025). “Completely unexpected: Antarctic sea ice may be in terminal decline due to rising Southern Ocean salinity.”
Issue 130 - March2026
Beneath the War Zone, the Persian Gulf’s Marine Ecosystem Faces Its Next Great Test
Editor’s Note: Why We Are Featuring Iran Now
Iran is once again dominating headlines.
From widespread public demonstrations that surged across Iran in late 2025 into early this year, to the current escalation and the breaking of war, the country is being discussed globally in the context of politics, conflict, and human suffering. The loss of life and instability unfolding are real and devastating. Nothing in this feature is intended to diminish that reality.
But there is something else that often goes unspoken.
For years, inside and outside of environmental circles, people have quietly asked me a question. Sometimes with curiosity. Sometimes with hesitation. Sometimes almost with guilt.
“What is actually there?”
They were referring to biodiversity.
In today’s world, there is pressure to already know. When the breadth of human knowledge appears to sit at our fingertips, asking basic questions can feel uncomfortable. If a place overlaps with your professional field or your moral concern, you are expected to understand it fully.
Curiosity, however, should never carry shame.
At SEVENSEAS Media, we see questions as bridges. When a region becomes defined only by conflict, it becomes even more important to remember that it is also defined by landscapes, species, ecosystems, culture, and people who have lived in relationship with nature for millennia.
Iran is not only a geopolitical flashpoint. It is a country of vast mountain ranges, ancient forests, wetlands, deserts, coral communities, migratory flyways, and one of the most strategically significant marine corridors in the world. It sits at the intersection of terrestrial and marine biodiversity, connecting ecosystems across Central Asia, the Caucasus, the Arabian Peninsula, and the Indian Ocean.
It is home to coastal communities whose fishing traditions stretch back centuries, to wetlands that host migratory birds crossing continents, and to marine systems that sustain life far beyond their shorelines.
This feature has been in development for some time. In light of current events, we believe it is important to move forward thoughtfully and with care.
Education is not a distraction from suffering. It is part of long term resilience.
At SEVENSEAS Media, we promote education and peace across cultures and living in harmony with nature. We believe that understanding biodiversity can humanize places that are otherwise reduced to headlines. Conservation, at its best, transcends politics and builds shared responsibility for the natural world.
In the articles that follow, we explore the geography of Iran, its terrestrial biodiversity, its migratory importance, and its ocean and coastal ecosystems. We touch on traditional fishing cultures, current pressures, conservation challenges, and the organizations working to protect what remains.
As always, we are not here to simplify complexity. We are here to make space for informed curiosity and careful understanding.
In moments of conflict, it can feel easier to look away. We choose instead to look closer, and to recognize that ecological systems persist regardless of political borders.
This story is developing rapidly. Details may shift as the situation evolves. Last verified: March 3, 2026.

The headlines are dominated by oil prices, geopolitical brinkmanship, and military escalation. But below the waterline of the Persian Gulf, a quieter catastrophe is taking shape, one that will outlast any ceasefire.
The Persian Gulf is not the barren petrochemical corridor that its reputation might suggest. It is a semi-enclosed sea of roughly 241,000 square kilometres, averaging just 35 metres in depth, connected to the wider Indian Ocean only through the 56-kilometre-wide Strait of Hormuz. Within this shallow, hypersaline basin lives a marine community that has adapted to conditions most ocean species could not survive: summer surface temperatures regularly exceeding 35°C, salinity levels above 45 PSU, and winter cooling that can plunge below 18°C. The organisms that thrive here are not merely surviving. They are demonstrating resilience strategies that climate scientists around the world are studying with increasing urgency.
Approximately 60 species of reef-building coral have been documented in the Gulf, including the endemic Acropora arabensis, found nowhere else on Earth. These corals withstand water temperatures of up to 36°C, well beyond the 32°C threshold that triggers bleaching in most tropical reefs. Researchers have increasingly turned to Persian Gulf coral populations as living laboratories for understanding how reef organisms might adapt to a warming planet. The Gulf also supports the world’s second-largest population of dugongs, after northern Australia, with an estimated 7,500 individuals grazing on seagrass beds along the coasts of Qatar, Bahrain, the UAE, and Saudi Arabia. Over 700 species of fish, populations of hawksbill and green sea turtles, Indo-Pacific humpback dolphins, whale sharks, and migratory seabird colonies all depend on this ecosystem.
The Immediate Threats
The environmental risks now facing this ecosystem are layered and compounding.
Oil contamination is the most visible concern. At least three commercial tankers have been struck by projectiles, with one confirmed ablaze and producing thick plumes of black smoke near Omani waters. A burning tanker does not simply release crude oil; it generates a toxic cocktail of partially combusted hydrocarbons, heavy metals, and particulate matter that settles across surrounding waters. With more than 150 laden tankers now anchored in open Gulf waters, the risk of collision, grounding, or further military targeting grows with each passing day. The shallow depth of the Gulf, averaging just 36 metres, means that spilled oil reaches the seafloor and coastal habitats far more quickly than in open ocean environments.
The sinking of at least nine Iranian warships introduces a different category of pollution. Sunken military vessels carry bunker fuel, hydraulic oils, lubricants, and munitions, all of which corrode and leach into surrounding waters over years and decades. A 2023 IUCN brief estimated that globally, over 8,500 shipwrecks are at risk of leaking approximately six billion gallons of oil. The Persian Gulf’s warm, shallow conditions accelerate corrosion, meaning these newly sunken warships could begin releasing contaminants faster than wrecks in colder, deeper waters.
Underwater noise pollution from military operations, including sonar, detonations, and sustained engine activity from hundreds of anchored vessels, adds biological stress. Marine mammals such as dugongs and dolphins rely on acoustic communication for feeding, mating, and navigation. Prolonged noise disruption can displace populations from critical habitats, with consequences that persist long after the sound stops.
Reports of potential mine-laying by Iranian forces introduce yet another dimension. Naval mines are indiscriminate by design; they threaten not only vessels but also the seabed itself, disturbing sediment and destroying benthic habitats when detonated. GPS jamming, confirmed across the region, increases the likelihood of navigational accidents among the hundreds of ships now attempting to shelter in place.
History’s Warning
The Persian Gulf carries the scars of previous conflicts. During the 1991 Gulf War, an estimated 4 to 11 million barrels of crude oil were deliberately released into its waters, covering more than 600 kilometres of Saudi coastline. Research conducted by Jacqueline Michel in 2010 found that oil had penetrated up to 50 centimetres into Gulf sediments and remained detectable 12 years after the spill. A 2017 study by Joydas et al. found “alarming levels” of hydrocarbons persisting in secluded bay areas more than 25 years later. While fish and bird populations showed encouraging recovery by 1994, the long-term contamination of sediments and coastal habitats tells a more complicated story.
The Gulf ecosystem did recover from 1991, a testament to its remarkable resilience. But it recovered into a world with fewer stressors. Today, the same ecosystem faces compounding pressures from coastal development, desalination plant discharge, climate-driven temperature extremes, and chronic oil pollution from routine shipping. A 2024 review published in Marine Pollution Bulletin found that 63.5% of the Gulf’s key habitats and species remain “data-deficient,” while 21.2% show documented decline. The margin for absorbing another major environmental shock has narrowed considerably.
What Comes Next
The environmental consequences of this crisis will not be determined by the conflict’s duration alone, but by what happens when it ends. After 1991, clean-up efforts focused almost exclusively on oil recovery from the water’s surface, while coastal habitats were largely neglected. If history offers any instruction, it is that the environmental response must begin alongside the military and diplomatic response, not after it.
International bodies, including the Regional Organization for the Protection of the Marine Environment (ROPME) and the International Maritime Organization, will need to coordinate rapid environmental assessment once conditions allow. Monitoring of coral communities, seagrass beds, and dugong populations should be prioritized, alongside sediment sampling near tanker anchorage sites and sunken vessel locations.
The Persian Gulf’s marine life has survived environmental extremes that would have destroyed ecosystems elsewhere. It has endured the largest deliberate oil spill in history and emerged, battered but functional. Whether it can absorb another round of military trauma on top of everything the 21st century has already thrown at it is a question that marine scientists are watching with deep concern, and one that the rest of us should be paying attention to as well.
Written by: Junior Thanong Aiamkhophueng
Attribution: This article draws on marine biodiversity research published in Marine Pollution Bulletin (2024) on habitat status across the Persian Gulf; peer-reviewed ecological analysis from PMC on critical research needs for Gulf coral reef ecosystems (Feary et al., 2014); EBSCO Research’s overview of the Persian Gulf ecosystem including dugong populations and endemic coral species; the IUCN’s 2023 issues brief on marine pollution from sunken vessels; ScienceDirect review of habitat and organism status across six Gulf countries; gCaptain and Windward Maritime Intelligence reporting on vessel attacks and anchorage patterns; France 24 and Al Jazeera coverage of mine-laying risks and GPS jamming; historical oil spill research by Jacqueline Michel (2010) on sediment penetration and Joydas et al. (2017) on long-term hydrocarbon persistence; CNN’s 2010 retrospective on 1991 Gulf War oil spill recovery; Wikipedia’s compiled entry on the Gulf War oil spill; and Maritime Education’s profile of Persian Gulf marine habitats and biodiversity. Persian Gulf coral reef satellite image by NASA Earth Observatory. For further reading, visit the IUCN Marine Programme, the Regional Organization for the Protection of the Marine Environment (ROPME), and NASA Earth Observatory.
Health & Sustainable Living
How the Strait of Hormuz Crisis Will Reach Your Doorstep
Editor’s Note: Why We Are Featuring Iran Now
Iran is once again dominating headlines.
From widespread public demonstrations that surged across Iran in late 2025 into early this year, to the current escalation and the breaking of war, the country is being discussed globally in the context of politics, conflict, and human suffering. The loss of life and instability unfolding are real and devastating. Nothing in this feature is intended to diminish that reality.
But there is something else that often goes unspoken.
For years, inside and outside of environmental circles, people have quietly asked me a question. Sometimes with curiosity. Sometimes with hesitation. Sometimes almost with guilt.
“What is actually there?”
They were referring to biodiversity.
In today’s world, there is pressure to already know. When the breadth of human knowledge appears to sit at our fingertips, asking basic questions can feel uncomfortable. If a place overlaps with your professional field or your moral concern, you are expected to understand it fully.
Curiosity, however, should never carry shame.
At SEVENSEAS Media, we see questions as bridges. When a region becomes defined only by conflict, it becomes even more important to remember that it is also defined by landscapes, species, ecosystems, culture, and people who have lived in relationship with nature for millennia.
Iran is not only a geopolitical flashpoint. It is a country of vast mountain ranges, ancient forests, wetlands, deserts, coral communities, migratory flyways, and one of the most strategically significant marine corridors in the world. It sits at the intersection of terrestrial and marine biodiversity, connecting ecosystems across Central Asia, the Caucasus, the Arabian Peninsula, and the Indian Ocean.
It is home to coastal communities whose fishing traditions stretch back centuries, to wetlands that host migratory birds crossing continents, and to marine systems that sustain life far beyond their shorelines.
This feature has been in development for some time. In light of current events, we believe it is important to move forward thoughtfully and with care.
Education is not a distraction from suffering. It is part of long term resilience.
At SEVENSEAS Media, we promote education and peace across cultures and living in harmony with nature. We believe that understanding biodiversity can humanize places that are otherwise reduced to headlines. Conservation, at its best, transcends politics and builds shared responsibility for the natural world.
In the articles that follow, we explore the geography of Iran, its terrestrial biodiversity, its migratory importance, and its ocean and coastal ecosystems. We touch on traditional fishing cultures, current pressures, conservation challenges, and the organizations working to protect what remains.
As always, we are not here to simplify complexity. We are here to make space for informed curiosity and careful understanding.
In moments of conflict, it can feel easier to look away. We choose instead to look closer, and to recognize that ecological systems persist regardless of political borders.
This story is developing rapidly. Details may shift as the situation evolves. Last verified: March 3, 2026.

The images of burning tankers and military strikes feel distant when you are reading them on your phone over morning coffee. But the Strait of Hormuz crisis is not a story that will stay overseas. It is already in motion toward your fuel pump, your grocery store, and your electricity bill. The question is not whether you will feel its effects, but when, and how significantly.
This is not a call to panic. It is a call to understand. Here is what is happening, what it means for daily life, and what you can do about it.
Understanding the Ripple
The Strait of Hormuz handles approximately 20 million barrels of oil per day, representing roughly one-fifth of global supply. It also carries nearly 20% of the world’s liquefied natural gas trade, with the vast majority originating from Qatar. When this corridor shuts down, even partially, the consequences cascade through interconnected systems in ways that are not always immediately obvious.
Fuel prices are the most visible and fastest-moving consequence. Brent crude has already jumped approximately 10%, and analysts warn that sustained disruption could push prices above $100 per barrel, levels not seen since the aftermath of Russia’s invasion of Ukraine in 2022. For consumers, this translates to higher prices at the pump, typically with a short delay as wholesale costs filter through to retail. Countries that adjust fuel prices monthly may see a lag of weeks; those with market-based pricing will feel it sooner.
Shipping costs follow closely behind. CMA CGM has already imposed an Emergency Conflict Surcharge ranging from $2,000 to $4,000 per container, effective March 2. Rerouting vessels around the Cape of Good Hope adds 15 to 20 days to transit times between Asia and Europe, driving up fuel consumption, insurance premiums, and operational costs for every carrier on those routes. Freight rate increases of 25% to 30% are being projected for companies dealing in international trade. With both the Strait of Hormuz and the Red Sea now under simultaneous pressure, there is no quick alternative.
Food prices will be the slowest to move but potentially the most deeply felt. Higher energy costs raise the price of fertilizer production, which relies on natural gas as both an energy source and a chemical feedstock. That cost increase works its way into agricultural inputs, then into food processing, packaging (which depends on petroleum-based plastics), refrigerated transport, and finally retail pricing. Import-dependent economies will feel this most acutely. For nations in the Gulf region that rely heavily on imported food, the disruption is doubly compounded: both the energy to produce food and the shipping routes to deliver it are under pressure simultaneously.
What This Actually Means for You
We could list the usual advice here: drive less, buy local, keep some extra staples on hand. Some of that is reasonable enough if you are already headed to the shops. But we think it is more useful to be direct about what this kind of crisis actually looks like from a household perspective, because the biggest risk is not running out of anything. It is making bad decisions based on bad information.
Most of the cost increases heading your way are not something you can opt out of. When Brent crude moves, fuel prices follow. When container surcharges jump $2,000 to $4,000 per unit, those costs get passed along through supply chains that touch everything from packaging plastics to refrigerated transport. The question is not whether prices will rise but how quickly, how steeply, and for how long, and those answers depend on how the military and diplomatic situation evolves in the coming weeks, not on anything happening in your kitchen.
What you can do is calibrate your expectations. Fuel costs will move first, likely within days. Food prices will lag by weeks or months, and any dramatic grocery increases in the first week of this crisis almost certainly reflect opportunistic repricing rather than genuine cost transmission. Knowing that difference protects you from panic and from accepting inflated prices as inevitable when they may not be.
You can also be disciplined about your information sources. The Joint Maritime Information Center, Lloyd’s List, and established international wire services are reporting verified data. Social media is generating speculation at industrial scale. The gap between the two will widen as this crisis continues, and the most regrettable financial decisions, whether personal or political, tend to get made in the fog of the first 72 hours.
Finally, and this matters to us as an ocean publication, pay attention to who is most exposed. It is not the consumer adjusting a commute. It is the fishing communities along the Persian Gulf whose fuel, bait, and export markets are all disrupted at once. It is the populations in Gulf states that import the vast majority of their food through the very shipping lanes now under threat. It is the seafarers on 150-plus tankers anchored in a conflict zone with no departure date. Their story is the full story of what a maritime crisis costs, and it is the story we will keep covering.
The Ocean Connection
At SEVENSEAS, we believe that every geopolitical crisis carries an environmental dimension that too often gets buried beneath the economic and security headlines. The Persian Gulf is not just an energy corridor. It is a living marine ecosystem that supports endangered species, sustains fishing communities, and holds scientific secrets about how coral reefs might survive a warming planet. The decisions being made in the Strait of Hormuz this week will shape the health of that ecosystem for decades to come.
We will continue following this story not only because of its implications for oil markets and global shipping, but because the ocean always pays a price in wartime, and someone needs to be watching.
Written by: Junior Thanong Aiamkhophueng
Attribution: This article draws on economic analysis from Kpler’s market intelligence report on Strait of Hormuz supply disruption and commodity pricing; Gulf News reporting on projected impacts to UAE fuel, grocery, and consumer prices, including commentary from economists on inflationary transmission; Al Jazeera’s analysis of EIA data on daily oil transit volumes and Asian market dependency; SpecialEurasia’s assessment of maritime blockade economics and LNG supply disruption; ESM Magazine’s analysis of European grocery retail and FMCG supply chain vulnerability; The Conversation’s academic perspective on chokepoint economics; Automotive Manufacturing Solutions’ reporting on global logistics rerouting and container surcharge impacts; the Cyprus Mail’s coverage of consumer preparedness and profiteering warnings; gCaptain’s operational data on CMA CGM Emergency Conflict Surcharges and shipping line suspensions; and the Middle East Briefing’s historical comparison of energy crisis pricing patterns. Container ship photo via Wikimedia Commons. For further reading, visit Kpler, the U.S. Energy Information Administration (EIA), and the International Energy Agency (IEA).
Issue 130 - March2026
The Strait of Hormuz Is Now a War Zone. Here Is What That Means for the Ocean.
Editor’s Note: Why We Are Featuring Iran Now
Iran is once again dominating headlines.
From widespread public demonstrations that surged across Iran in late 2025 into early this year, to the current escalation and the breaking of war, the country is being discussed globally in the context of politics, conflict, and human suffering. The loss of life and instability unfolding are real and devastating. Nothing in this feature is intended to diminish that reality.
But there is something else that often goes unspoken.
For years, inside and outside of environmental circles, people have quietly asked me a question. Sometimes with curiosity. Sometimes with hesitation. Sometimes almost with guilt.
“What is actually there?”
They were referring to biodiversity.
In today’s world, there is pressure to already know. When the breadth of human knowledge appears to sit at our fingertips, asking basic questions can feel uncomfortable. If a place overlaps with your professional field or your moral concern, you are expected to understand it fully.
Curiosity, however, should never carry shame.
At SEVENSEAS Media, we see questions as bridges. When a region becomes defined only by conflict, it becomes even more important to remember that it is also defined by landscapes, species, ecosystems, culture, and people who have lived in relationship with nature for millennia.
Iran is not only a geopolitical flashpoint. It is a country of vast mountain ranges, ancient forests, wetlands, deserts, coral communities, migratory flyways, and one of the most strategically significant marine corridors in the world. It sits at the intersection of terrestrial and marine biodiversity, connecting ecosystems across Central Asia, the Caucasus, the Arabian Peninsula, and the Indian Ocean.
It is home to coastal communities whose fishing traditions stretch back centuries, to wetlands that host migratory birds crossing continents, and to marine systems that sustain life far beyond their shorelines.
This feature has been in development for some time. In light of current events, we believe it is important to move forward thoughtfully and with care.
Education is not a distraction from suffering. It is part of long term resilience.
At SEVENSEAS Media, we promote education and peace across cultures and living in harmony with nature. We believe that understanding biodiversity can humanize places that are otherwise reduced to headlines. Conservation, at its best, transcends politics and builds shared responsibility for the natural world.
In the articles that follow, we explore the geography of Iran, its terrestrial biodiversity, its migratory importance, and its ocean and coastal ecosystems. We touch on traditional fishing cultures, current pressures, conservation challenges, and the organizations working to protect what remains.
As always, we are not here to simplify complexity. We are here to make space for informed curiosity and careful understanding.
In moments of conflict, it can feel easier to look away. We choose instead to look closer, and to recognize that ecological systems persist regardless of political borders.
This story is developing rapidly. Details may shift as the situation evolves. Last verified: March 3, 2026.

Source: DVIDS (Defense Visual Information Distribution Service). Credit: U.S. Navy photo / Released via DVIDS
In the early hours of March 1, 2026, the narrow waterway that carries roughly one-fifth of the world’s oil supply became something it had never been in modern history: an active battlefield. Following coordinated U.S. and Israeli strikes on Iran, which began February 28 under the operation name “Epic Fury,” the Strait of Hormuz has descended into a maritime crisis with consequences that will ripple far beyond energy markets.
At least three commercial oil tankers have been struck by projectiles in the waters near the Strait. The Palau-flagged tanker Skylight was hit five nautical miles north of Khasab, Oman, injuring four crew members and forcing the evacuation of all twenty aboard. The crude carrier MKD Vyom took a projectile above the waterline that sparked an engine room fire. A third vessel, the Sea La Donna, also reported being attacked. Maritime authorities have noted that none of these vessels had any obvious military affiliation, a detail that underscores the indiscriminate nature of the threat now facing merchant shipping.
Iran’s Islamic Revolutionary Guard Corps has issued radio warnings via VHF broadcasting that no ships are permitted to transit the Strait. Although Tehran has not declared a formal blockade, the practical effect has been devastating. Tanker traffic through the corridor has collapsed by approximately 70%, according to vessel tracking data from Windward Maritime Intelligence. More than 150 tankers, including crude oil carriers and liquefied natural gas vessels, have dropped anchor in open Gulf waters rather than risk the crossing. At least 40 very large crude carriers, each holding around two million barrels of oil, are now idling inside the Persian Gulf.
The response from the global shipping industry has been swift and unprecedented. Maersk, the world’s largest container shipping company, suspended all vessel crossings through the Strait until further notice. CMA CGM activated emergency security measures, ordering all Gulf-bound vessels to shelter and rerouting ships via the Cape of Good Hope, adding roughly 15 to 20 days to transit times. Hapag-Lloyd, MSC, and several Japanese shipping giants have followed suit. The World Shipping Council issued a statement emphasizing that seafarers must not be targeted or placed at risk by armed conflict.
The insurance market has effectively sealed the door that military action left ajar. Steamship Mutual issued a formal cancellation of war risk coverage for the Persian Gulf and adjacent waters, effective 72 hours from March 1. Without insurance, even willing operators cannot legally sail. The Joint Maritime Information Center has elevated the regional maritime risk level to “CRITICAL,” its highest classification, warning that further attacks are almost certain.
On the military side, the U.S. has reported destroying at least nine Iranian warships in the Gulf of Oman, with operations continuing. These sunken vessels now sit on the seafloor of one of the world’s most ecologically fragile marine environments, carrying fuel bunkers, lubricants, and munitions that will corrode over time.
Brent crude surged approximately 10% to around $80 per barrel within hours of the first strikes, up from roughly $73 before the weekend. Analysts at JPMorgan and Barclays have warned that prices could spike to $100 or higher if the disruption persists. For an ocean that already bears the weight of the world’s heaviest shipping traffic, the consequences of this crisis extend well beyond barrels and balance sheets.
SEVENSEAS will continue to follow this story as it develops, with particular attention to the marine environmental impacts that are already unfolding beneath the headlines. In the articles that follow, we examine what this conflict means for the Persian Gulf’s irreplaceable marine ecosystem, and what ordinary people can do to prepare for the ripple effects that are heading their way.
Written by: Junior Thanong Aiamkhophueng
Attribution: This article draws on maritime intelligence reporting from gCaptain’s 36-hour operational analysis of the Strait of Hormuz crisis; Windward Maritime AI’s 48-hour intelligence breakdown on vessel tracking and AIS data; Kpler market intelligence on oil flow disruption and commodity pricing; Euronews and France 24 coverage of the tanker attacks near Khasab, Oman; Al Jazeera’s analysis of IRGC radio warnings and commercial shipping suspension; the Joint Maritime Information Center’s CRITICAL-level threat assessment; Axios reporting on U.S. naval operations under Operation Epic Fury; Bloomberg coverage of tanker anchorage patterns and insurance withdrawal; and the World Shipping Council’s statement on seafarer safety. Strait of Hormuz naval vessel photo by Sahar Al Attar/AFP via Getty Images. For further reading, visit gCaptain, Windward Maritime Intelligence, and the Joint Maritime Information Center.
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