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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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The polar bear ( Ursus maritimus ) is found in the Arctic and classified as a vulnerable species by the IUCN Red List of Threatened Species. This marine mammal can swim more than 30 miles when sea ice has receded due to warm...
Florida Manatee ( Trichechus manatus latirostris ) swimming within a fresh...
The small vaquita ( Phocoena sinus ), a type of porpoise, usually only...

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The International Union for the Conservation of Nature ( IUCN ) maintains the Red List of Threatened Species , an inventory...
Walruses use sea ice as platforms on which to nurse their young and launch their dives for clams and other bottom-dwellers. Each spring, walruses move northward to stay close to these perches as ice...
West Indian Manatees, Trichechus manatus , are found in warm, shallow coastal ecosystems along the southeastern North America and northeastern South America. They graze plants in mangrove ecosystems...
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 .
“For the past few years I have visited the island of Dominica to enjoy its beauty both above and below the surface. This photo was taken during a lucky encounter with a member of the ‘group of 7’ pod...
A Galapagos sea lion ( Zalophus wollebaeki ) rests on a beach in Ecuador. The population of these charming animals swings wildly during El Niño events, but is declining overall. They are currently...
Editor's note: Read Nick's first blog post about "toothed" baleen whales to see what their team is excavating on Vancouver Island. We departed from Port Renfrew on Tuesday morning on the Michelle...
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...
This close-up photo of a right whale's head shows dozens of hitchhikers—tiny crustaceans known as whale lice, or cyamid amphipods. They live on the rough patches of skin (known as callosities) on...
Phoenix rises out of the waters east of Cape Cod, MA, in April 2003. The rough patches of skin (known as callosities) occur in unique patterns on all North Atlantic right whales and help researchers...
Hear how research unfolds at sea in a tiny Zodiac surrounded by creatures that measure longer than a city bus. Playing female whale calls into the water, researcher Susan Parks suddenly finds herself...
Hoping to hear bowhead whales , NOAA marine mammal scientist Sue Moore listens to real-time sounds from an underwater hydrophone.
The common bottlenose dolphin ( Tursiops truncatus ) has lungs, but doesn't breathe through its mouth. Instead, toothed whales breathe through a blowhole on top of their head. Read more about...
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