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Dr. Stefan Huggenberger from the University of Cologne explains sound production in sperm whales in "Moby Dick's Boom Box: Nasal Complex of Sperm Whales," a presentation at the Smithsonian's National Museum of Natural History...
At the ends of the Earth, life thrives despite extreme conditions. In the...
In the episode of One Species at a Time , writer Karen Romano Young takes an...
A Twelve-Step group for wild animals with people-food addictions? Don’t be...

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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 Hawaiian monk seal ( Monachus...
The ocean sustains land animals besides humans. Here, a fox looks for a meal...
When a whale dies, the story has just begun. The massive carcass sinks to...

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The International Union for the Conservation of Nature ( IUCN ) maintains the Red List of Threatened Species , an inventory...
Phoenix is seen skim feeding off the coast of Maine in August 2004. More about the right whale can be found in our Tale of a Whale featured story .
A right whale opens its mouth wide, revealing huge plates of baleen hanging from its upper jaw. There are between 200 and 270 baleen plates on each side of a right whale's upper jaw. They work like a...
The Endangered Species Act (ESA) was signed into law on December 28, 1973 by President Nixon. Over 2,000 species are currently on the ESA, and they are separated into "Threatened" and "Endangered"...
A life-size, meticulously detailed model of the North Atlantic right whale Phoenix hangs in the Smithsonian’s Sant Ocean Hall in the National Museum of Natural History, Washington, DC. More about...
Polar bears are threatened by the loss of sea ice in the Arctic . They walk for miles on the ice shelves to access different parts of the sea to hunt seals and other food. But as the ice melts as the...
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...
In 1996, at age nine, Phoenix has her first calf (North Atlantic right whale #2605) off the southeast coast of Florida. More about the right whale can be found in our Tale of a Whale featured story .
North Atlantic right whales and ocean-going vessels often cross paths. Researchers have worked to show the interactions between whales and ships in order to protect the whales from collision. More...
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 fringed baleen plates are easy to observe as this North Atlantic right whale skims the water’s surface while it feeds. Many baleen whales suck in as much water was possible, and then push it out...
North Atlantic right whales migrate seasonally between calving and feeding grounds along the eastern coast of the United States. Most North Atlantic right whales go south for the winter, to the...
A giant squid engages in a struggle for survival with a sperm whale. Giant squid beaks and other undigested pieces of giant squid have been found in the stomachs of sperm whales . More about the...
The ocean sustains land animals besides humans. Here, a fox looks for a meal at low tide on the Arctic Peninsula. When the tide goes out, it leaves behind tidepools full of tasty snacks for foxes and...
Sirenians , or seacows, are a group of marine mammals that include manatees and dugongs. In the modern ocean, only one species of seacow is found in each world region, however, the fossil record...
The Baird's beaked whale is a species of toothed whale. Most toothed whales (which also include dolphins, killer whales and porpoises) live in social groups called pods. Read more about toothed...
How do right whales size up? North Atlantic Right whales ( Eubalaena glacialis ) are big, but they're not the biggest whales. That distinction goes to the Blue whale ( Balaenoptera musculus ), the...
This illustration shows whalers of the early 1800s with their highly profitable catch.
A polar bear ( Ursus maritimus) in Churchill Wildlife Management Area in Manitoba, Canada smelling the scent of humans while waiting for sea ice to form on of the Hudson Bay. There are several human...
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