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by Caty Fairclough Sharks have been feared hunters ever since people first observed them swimming in the vast ocean. Yet today, sharks are declining rapidly on a global scale because humans have...
CREDIT: Wikimedia User “Fisherman” Because of consumer demand for sashimi (a fresh raw seafood dish), the fishing pressure on Atlantic bluefin tuna is extraordinarily high. The sale of a single...
The North Atlantic right whale is one of the world's largest animals, but scientists estimate that fewer than 450 remain. In the past, they were hunted for their oil and baleen; now they get tangled...
Two North Atlantic right whales ( Eubalaena glacialis ) swim at the surface of the water. Learn more about this species in the North Atlantic Right Whale section.
A 2010 study of IUCN's Red List of Threatened Species found that one-fifth of the world's vertebrates (animals with backbones) are threatened with extinction, including this Hawaiian monk seal. The...
The Sundarbans National Park site in India was inscribed on the World Heritage List in 1987. The site, located in the Ganges delta, contains the world's largest mangrove forest and hosts a number of...
Forensics is a key tool for enforcing the laws and treaties that protect marine animals. Investigators in a recent case used DNA analysis to track down and convict sea turtle poachers. All seven...
By Caty Fairclough In centuries past, the ocean was thought to be full of krakens, sea serpents, sea monsters and other fantastic creatures. They helped to bring the mysterious ocean into the more...
In the 1940s the short-tailed albatross population plummeted from tens of millions to such a small number that they were believed to be extinct. Their decline was due to hunting for their feathers...
“Leatherback turtles are critically endangered, and this young hatchling is a symbol of hope for their future.” -- Nature's Best photographer, Jason Bradley . See more beautiful ocean photos in our...
A drawing of Phoenix from the Right Whale Catalog documents her callosity pattern and other identifying marks. More about whales can be found in our Tale of a whale featured story .
Stretching up to 16.8 meters (55 feet) long and weighing up to 62 tons (70 tons), the North Atlantic right whale is one of the world’s largest animals—and one of the most endangered whales...
A scuba diver explores elkhorn corals ( Acropora palmata ) growing on a tropical reef. Coral reefs provide recreation and inspiration for millions of people every year. Elkhorn coral is listed as...
Endangered Pacific leatherback sea turtles now have nearly 42,000 square miles of Pacific Ocean to call their own. Thanks to a decision in January 2012 by the National Marine Fisheries Service, these...
A view of the injured fluke belonging to Phoenix’s mother, Stumpy. It is not known what caused this injury. It possibly could have been an entanglement. More about whales can be found in our Tale of...
The long toothy rostrum or “saw” gives sawfish their common name. They use the saw to dig in the sand for crustaceans or to attack prey by vigorously slashing from side to side. This smalltooth...
A manatee swimming in shallow waters. The West Indian manatee is listed on the IUCN's Red List of Threatened Species as Vulnerable. More about mangroves can be found in our Mangroves featured story .
Sarah Gotheil, from IUCN Global Marine Programme , snapped this photo in the course of her research into fragile species and ecosystems. A new project led by IUCN will unveil the mysteries of...
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