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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 .
Once common in the West Indies, the Black Capped Petrel ( Pterodroma hasitata ), which breeds in high Caribbean mountains, is now on the endangered species list. Unlike many seabirds, it is active...
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...
The Papahānaumokuākea site in the United States was inscribed on the World Heritage List in 2010. The site is a vast isolated cluster of small low-lying islands and atolls with its surrounding ocean...
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...
Largely due to overfishing, the Southern Bluefin Tuna is listed as " critically endangered ." If its population continues to decline, the species faces the possibility of extinction. It's not alone...
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...
Phoenix swimming with her calf in February 2007 in the Southeast calving grounds off the coasts of Georgia and Florida. Researchers track these highly endangered whales (there are only about 450 of...
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.
There were fewer than 450 North Atlantic right whales in 2006. Yet it has been illegal to hunt them since 1935. Why haven’t populations increased? Traits that made right whales easy to hunt make them...
Scientists from the U.S. and Greece are working from opposite sides of the ocean to save the Hawaiian (pictured here) and Mediterranean monk seals . The IUCN Red List of Threatened Species has...
A close up view of Phoenix and the rough patches of skin known as callosities that are found on all North Atlantic right whales . These callosities are inhabited by small amphipods called whale lice...
In the Pacific Ocean, four ocean currents merge to form the North Pacific gyre, also known as the North Pacific Subtropical High, which spans the western US to Japan, and Hawaii to California. This...
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 .
A young Kemp's ridley sea turtle ( Lepidochelys kempii ) recovers at the Audubon Aquarium of the Americas, after the 2010 Gulf of Mexico oil spill. Turtles were cleaned and nursed back to health with...
The Kemp’s ridley is a “riddler” among sea turtles . Although the species was initially recognized in 1880, scientists didn't know where it nested until 80 years later, when a film documenting about...
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...
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...
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