Issue 60 - May 2020
Fossil Reveals Missing Link in Getting Fish out of Water
By Belinda Willis

A global team of researchers reveal how a fish fin turned into a human hand.
Leading palaeontologists are revealing how an ancient fossil contains the missing link in how the human hand evolved from fish fins.
Fossil scans scrutinised by an international team drawn from Flinders Universityin Adelaide, South Australia and the Université du Québec à Rimouski in Canada has led to the breakthrough evidence of how fish progressed into four-legged vertebrates.
Strategic Professor in Palaeontology at Flinders University Professor John Long said they announced their discovery of a complete specimen of a tetrapod-like fish called Elpistostege in the journal Nature.
“It reveals extraordinary new information about the evolution of the vertebrate hand,” Prof Long said.

“This is the first time that we have unequivocally discovered fingers locked in a fin with fin-rays in any known fish. The articulating digits in the fin are like the finger bones found in the hands of most animals.
“This finding pushes back the origin of digits in vertebrates to the fish level, and tells us that the patterning for the vertebrate hand was first developed deep in evolution, just before fishes left the water.”
The team used high energy CT-scans to reveal the presence of a humerus (arm), radius and ulna (forearm), rows of the carpus (wrist) and phalanges organized in digits (fingers) in the skeleton of a 1.57 metre long fish.
Prof Long said Flinders University is equipped with one of the best labs in the world for analyzing CT data and Canada’s Prof Richard Cloutier spent six months on sabbatical working as a Flinders University Visiting International Fellow leading to the new finding.
Work focused on a remarkable new complete specimen of Elpistostegediscovered in Canada during 2010 – Elpistostege was the largest predator living in a shallow marine to the estuarine habitat of Quebec about 380 million years ago.
It had powerful sharp fangs in its mouth so it could have fed upon several of the larger extinct lobe-finned fishes found fossilised in the same deposits.
Co-author Richard Cloutier from Université du Québec à Rimouski said over the past decade, fossils informing the fish-to-tetrapod transition have helped to better understand anatomical transformations associated with breathing, hearing, and feeding, as the habitat changed from water to land on Earth.
“The origin of digits relates to developing the capability for the fish to support its weight in shallow water or for short trips out on land,” he said.
“The increased number of small bones in the fin allows more planes of flexibility to spread out its weight through the fin.
“The other features the study revealed concerning the structure of the upper arm bone or humerus, which also shows features present that are shared with early amphibians. Elpistostege is not necessarily our ancestor, but it is closest we can get to a true ‘transitional fossil’, an intermediate between fishes and tetrapods.”

The evolution of fishes into tetrapods – four-legged vertebrates of which humans belong – was one of the most significant events in the history of life.
Vertebrates were then able to leave the water and conquer the land but in order to complete this transition- one of the most significant changes was the evolution of hands and feet.
Preparation and CT scanning of the specimen of Elpistostege took place in Quebec in 2010 with Prof Cloutier working with Isabelle Bechard to do the initial interpretation of the scan data, and Vincent Roy and Roxanne Noel to analyse the backbone and fin structures.
A collaboration with Prof John Long and the Flinders University team began in 2014 through Prof Long’s connection with Canadian palaeontologists forged while he was president of the world’s largest palaeontology society, The Society of Vertebrate Paleontology.
In Adelaide, Dr Alice Clement at Flinders University continued the CT work which revealed details of the digits in the fin.
Prof Mike Lee analysed the phylogenetic data to demonstrate that Elpistostegeis now the most evolutionary ‘advanced’ fish known, one node down on the evolutionary tree to all tetrapods.
Prof Long said Flinders University had one of the strongest groups in Australia for vertebrate palaeontology and has recently installed its own high-powered CT scanner signalling “a whole new era of doing our own CT scanning”.
And work would continue on the Elpistostege fish fossil, “this is the tip of the iceberg”, Prof Long said.
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Issue 60 - May 2020
SEVENSEAS Travel Magazine – May 2020 – Issue 60

Ireland’s Cliff Coast: May 2020 Feature Destination
Be wowed with panoramic views from dramatic cliff edges. Feel blasts of the fresh sea air with lighthouse walks. Read more…
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Go Mo Go Travel Blog: Uzbekistan
I signed up to run the Dushanbe Half Marathon, Tajikistan. I honestly don’t know why I do these things, but I thought since I’m going to be travelling in Central Asia again, I might as well see another country and Uzbekistan was my first choice. I’ll tell you why. Read more…
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Flamboyant Cuttlefish – Jack’s May Underwater Photograph
Pfeffer’s flamboyant cuttlefish, Metasepia pfefferi is one of the smallest cuttlefish growing up to 8cm in length and the prettiest of the species making it a favourite subject for scuba divers and underwater photographers. Read more…
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Idled Americans Can Grow Vegetables for Better Health & Environment
Social Distancing Due to COVID-19 Spurs Bloom of Gardening, Self-Sufficiency in U.S. Backyards and Community Spaces; “Climate Victory Gardens” Provide Earth-Friendly Blueprint for Homegrown Produce. Read more…
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Earth Challenge 2020 World’s Largest Citizen Science Initiative Launched for Earth Day 2020
Earth Challenge 2020 (Earth Challenge) launched today marking the 50th anniversary of Earth Day. This project creates a global expansion of open source citizen science data and opportunities for civic engagement. Read more…
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Artwork in support of SEVENSEAS Media by Fidan Karimova
Fidan Karimova (@fikari) is an avid ocean supporter and artist. In addition to her day time job in the water industry, working on technology innovation in the water industry, she enjoys creating artwork to support organizations working keeping our oceans clean for future generations. Read more…
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Six Insta-worthy Beauty Spots in Northern Ireland
Northern Ireland’s gorgeous landscape has many Insta-worthy views, from ancient castles to majestic mountains. Dive into these stunning Insta-photos and immerse yourself in scenic beauty. Read more…
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Control in the Cold by Jonas Beyer, a Wildlife Photographer
Jonas Beyer is a wildlife photographer, spending his time battling the elements in some of the world’s coldest places. Read more…
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Landmark Deep-Sea Mission to Boost Ocean Action
The newest Commonwealth member country, Maldives, has joined Seychelles to launch a major joint scientific expedition to investigate unexplored depths of the Indian Ocean. Read more…
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Deal to commercialise oil spill technology
A material made from waste cooking oil and sulphur that can soak up oil spills and other pollution will be commercialised following a deal between its South Australian inventors and a Singaporean company. Read more…
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10 Things You Can Do to Help the Environment During Quarantine
With local and national parks being closed around the country to help reduce the spread of COVID-19, it may feel as though we are losing touch with the natural world around us. Read more…
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Containing Methane and its Contribution to Global Warming
Methane is a gas that deserves more attention in the climate debate as it contributes to almost half of human-made global warming in the short-term. Read more…
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Ireland’s Unmissable Castles
Frequented by showbiz royalty and actual royalty alike, Irish castles have long been famous for their ancient history and heritage, their beauty and romance, and with many also offering the ultimate in five-star luxury. Read more…
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NOAA’s Recovery Effort – Mission: Iconic Reefs
The National Oceanic and Atmospheric Administration (NOAA) and partners have begun a decades-long approach to restore corals at seven ecologically and culturally significant reef sites in the Florida Keys. Their efforts will be an attempt to reverse the health of the corals and protect the economy that depends on them. Read more…
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How are microbes attracted to an oil spill?
Arezoo Ardekani, a Purdue University associate professor of mechanical engineering, has published research that describes the complex hydrodynamics of microorganisms at liquid-liquid and gas-liquid interfaces, showing that microbes may flock to areas where surfactant has been applied. Read more…
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Oakland Zoo Doubles Flamingo Flock with Ten New Feathery Friends
Oakland Zoo doubles the size of their flamingo flamboyance – a group of flamingos – with the addition of ten new mixed-sex Lesser flamingos from the San Diego Zoo, bringing the flock to 19. Read more…
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Ways to Reduce Plastic Waste while Enjoying the Beaches in Asia
While on vacation, we tend to relax and abandon our regular routine. Although back home you might be dedicated to recycling and protecting the environment, when you visit the beaches of Thailand, Vietnam, and Hai Nan Island, you may lapse into bad habits. Resad more…
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Suit Filed to Protect Rare Sharks

Earthjustice filed a federal lawsuit today on behalf of a local conservation group and individuals to enforce protections for a dwindling shark species that have roamed the oceans for millions of years. Read more…
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Cover art by Trevor Cole. Fanad Head Lighthouse, Letterkenny, Ireland
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SEVENSEAS FEATURED TRAVEL
Below are a few of our favorite tour centers and operators. Be sure to mention SEVENSEAS Media for special rates and discounts when making your inquiry.
Susan Bruce Travel

We’ve been travelling, advising clients, and planning trips across the globe for over 30 years. We help you explore amazing places and people — from mountain sanctuaries in Bhutan to the jungles of Peru. Learn more…
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Oceanic Society Expeditions.

A selection of expeditions and volunteer vacations for our travellers that will further the mission to conserve marine wildlife and habitats. More info.
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Alelí Tours Puerto Rico

Alelí Tours is a small-scale ecotourism business located in La Parguera, southwest Puerto Rico. More info.
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Isla Mar Research Expeditions – Field Courses in Puerto Rico

A field course coordination company in Puerto Rico that specializes in organizing and hosting island ecology (marine/terrestrial) themed courses. More info.
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Ever dream of swimming with humpback whales? Now you can.

If you are interested in swimming with or photographing humpback whales Karim guides… More info.
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Bangkok Photo Tours

We visit traditional sights but focus on markets, street art, and local food. All camera forward and environmentally sensitive. More info.
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Pangaea Ocean Sailing Expedition

Panex is opening up sailing expeditions for the guest crew. This is a unique opportunity to go sailing, cross an ocean, and be a part of something bigger. More info.
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SEE Turtles

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Scuba Junkie Dive Centers

A personal favorite from SEVENSEAS Media. Go to Sipadan, Mabul, Kapalai, Sibuan, Mantabuan, Mataking, and more. More info.
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Marine Megafauna Foundation

Our mission is to save threatened marine life using pioneering research, education, and sustainable conservation solutions, working towards a world where marine life and humans thrive together. Read more… More info.
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Loggerhead Marinelife Center

Imagine roaming some of the world’s most beautiful ecosystems. Gorgeous vistas, affordable travel and amazing memories; immersing yourself in the sounds of nature. More info.
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Pete Oxford Expeditions

We offer unique, small-group expeditions for travellers and photographers to remote and pristine destinations and cultures around the world. More info.
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Alnitak Conservation in Action on Volunteer Expeditions

Alnitak is a grassroots marine science organization dedicated to the conservation of biodiversity in our oceans. From May through to October, we run expeditions to survey the rich waters in the Balearic Sea, inviting any ocean enthusiasts to join us on board. Our expeditions take place in the stunning Cabrera National Park and the Menorca Biosphere Reserve. Read more…
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Issue 60 - May 2020
NOAA’s Recovery Effort – Mission: Iconic Reefs
By Kevin Majoros

The Florida Keys National Marine Sanctuary is home to North America’s only living coral barrier reef. The reef tract spans 225 continuous miles and is composed of outer reefs and patch reefs containing over 50 species of corals while hosting over 150 species of fish.
Upwards of 90 percent of the live corals that once covered the reefs have been lost over the years to a variety of factors including misplaced boat anchors, ship groundings, pollution, overfishing, storms, disease and warming ocean temperatures.
The National Oceanic and Atmospheric Administration (NOAA) and partners have begun a decades-long approach to restore corals at seven ecologically and culturally significant reef sites in the Florida Keys. Their efforts will be an attempt to reverse the health of the corals and protect the economy that depends on them.

Coral Restoration with a Focus at the Ecosystem Level
Without the restoration efforts, the corals would no longer be able to provide the structure and habitat for more than 6,000 species of plants and animals.
The ecosystem is already changing to an algae-dominated habitat and the need for action has become urgent. In addition to not being able to provide shelter for species such as spiny lobsters and sea turtles, the decline of the coral reefs will force a shift in the economy of the Florida Keys resulting in a change in the local culture.
“The once iconic coral reefs of the Florida Keys have suffered dramatic declines over the last 40 years and now straddle a tipping point,” says Dr Neil Jacobs, acting NOAA administrator. “Quick and decisive action has the very real potential to turn this decline around before it’s too late.”
The Approach to Large Scale Coral Restoration

The sites selected for restoration are Carysfort Reef, Horseshoe Reef, Cheeca Rocks, Sombrero Reef, Newfound Harbor, Looe Key Reef, and Eastern Dry Rocks.
These sites cover the geographic range of the region and all either have a history of small-scale restoration success or have characteristics that suggest restoration is likely to succeed.
NOAA’s approach is informed by years of research, successful trials, and expertise from more than two dozen coral scientists and restoration practitioners. NOAA will proactively intervene with natural conditions by removing nuisance and invasive species and introducing disease-resistant and climate-resilient corals.

During the phases, sea gardeners will conduct routine monitoring and nurturing of each site. This will include removing marine debris, coral predators, and species that might compete for space. They will also reattach any corals that may have been damaged or disconnected.
“Ten years ago, this project would be just a wild dream,” says Ken Nedimyer, Reef Renewal founder. “But now we are at a place in time where we have the technology to undertake a project of this size and we have a window of opportunity to do so. Not only can we think about doing it, but the need to do it is overwhelming.”
Partners Working Together on Coral Nurseries
Mission: Iconic Reefs, unparalleled in scope and scale, will require nearly 500,000 stony coral colonies. That number of corals is a huge lift, but by working together, multiple partners are up to the task.
Coral Restoration Foundation™ (CRF) is the world’s largest non-profit marine-conservation organization dedicated to restoring coral reefs to a healthy state, in Florida and globally. The restoration of Carysfort Reef (one of eight reef sites being fully restored by CRF™) is being undertaken with support from Ocean Reef Club and Ocean Reef Conservation Association.
Some partners, including Reef Renewal, Mote Marine Laboratory and Aquarium and Coral Restoration Foundation, will raise the quick-growing Phase 1 coral in nurseries in the ocean. Mote and The Florida Aquarium will augment these farms with corals grown in laboratories. These will be slower-growing corals, corals screened for resilience and corals bred to increase genetic diversity.

“We have been working on scaling up our restoration efforts,” says Scott Winters, CEO of Coral Restoration Foundation. “But if we want to save the Florida Reef Tract, we can be more effective if we work together. We have an opportunity to combine our expertise to have a hugely significant impact on the future of our coral reefs.”
The effort to put Florida Keys coral reefs on track for recovery is an enormous undertaking, requiring long-term collaboration between many partners. A cross-NOAA team is engaging world-renowned scientists, local restoration partners, and other federal and state agencies.
Volunteers have also been invited to assist with invasive species removal and long-term nursery and reef maintenance. The Blue Star Diving program was created by Florida Keys National Marine Sanctuary with input from local Keys dive and snorkel shop staff and owners and REEF Environmental Education Foundation.
Blue Star is a voluntary recognition program established to reduce the impact of divers, snorkelers and anglers on the ecosystems of the Florida Keys.
“The reefs are home to this community. They are part of our way of life,” says Sarah Fangman, Florida Keys National Marine Sanctuary superintendent. “We want to give people the chance to be part of healing the Keys, and we need the community’s support to make this vision a reality.”
Visit Coral Restoration Foundation on Instagram
Check out NOAA on InstagramInstagram for US National Marine Sanctuaries
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Conservation Photography
Flamboyant Cuttlefish – Photo taken in Ambon Indonesia – Jack’s May Underwater Photograph

Pfeffer’s flamboyant cuttlefish, Metasepia pfefferi is one of the smallest cuttlefish growing up to 8cm in length and the prettiest of the species making it a favourite subject for scuba divers and underwater photographers.
Flamboyant cuttlefish are found in tropical shallow Indo-Pacific waters off northern Australia, southern New Guinea, as well as numerous islands of the Indonesia, Philippines and Malaysia. They like shallow waters and muddy or sandy substrates and sometimes reef-associated around the rubble zone and are spotted at Lembeh or Ambon dive sites. Often active during the day and have been observed hunting small fish and crustaceans.
Like all cuttlefish have a ‘cuttlebone’ that they use for buoyancy. The flamboyant’s cuttlebone is extra-small and so they have a hard time with buoyancy, finding it hard to swim and hover midwater like other cuttlefish. They can’t swim for very long without sinking to the bottom. Instead, actually “walk” along the bottom of the seabed, displaying stunning changing colors and patterns, the only cuttlefish species known to do so.
Like other cuttlefish, the flamboyant use their ink to deceive predators. It will eject the ink from its funnel into the water to form an ink cloud while it swims to safety. However, it’s a very small squirt! Did you know that cuttlefish ink was the original sepia which was once used by artists – nowadays replaced mostly with synthetic sepia.
These beautiful cuttlefish get their name from the flamboyant pink, yellow and black ripples they make with their bodies when alarmed. They are the only species of cuttlefish known to have any poisons and they carry a unique toxin in their muscles. Research has shown the toxin to be as lethal as that of fellow cephalopod the Blue-ringed octopus.
Like other cephalopods, the flamboyant cuttlefish breeds once and then dies. Copulation takes place face to face. The male inserts a packet of sperm into a pouch on the underside of the female’s mantle and the female then fertilises her eggs with the sperm. The eggs are laid singly and placed in crevices or on ledges in coral, rock or wood or even the odd coconut shell! A bit of a hard life for the tiny creature!
See more of Jack Fung’s underwater photography on Instagram
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