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Humpback whales ( Megaptera novaengliae ) are the most abundant baleen whale in the nearshore waters around the Antarctic Peninsula. They, along with millions of penguins, seals, seabirds, and other whales, feed primarily on...
In the late 1990's, researchers at the Woods Hole Oceanographic Institution (...
Killer whales ( Orcinus orca ) are master hunters, using speed, camouflage, and...
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In honor of Mother's Day, the Citizens of the Sea blog salutes ocean-going...

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The false killer whale (pdf) ( Pseudorca crassidens ) is a large dolphin that, despite its name, is not closely related to the killer whale. Instead, it's named for similarities in their skull shapes, as the first false killer...
Lying on the ice with a few friends is not an unusual way to spend time for...
Bottlenose dolphins ( Tursiops truncatus ) are very social animals, and...

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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...
An early scale model of North Atlantic right whale Phoenix that was used to develop a life size model for the Smithsonian shows the location of scars on her mouth from entanglements with fishing gear...
An early scale model of North Atlantic right whale Phoenix indicates the location of scars on her tail from entanglements with fishing gear. More about the right whale can be found in our Tale of a...
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...
Often it's the tiniest organisms that do the most harm. One example is microscopic algae, which can grow rapidly to form harmful algal blooms . Such blooms (some are called "red tides") create...
Lying on the ice with a few friends is not an unusual way to spend time for walruses, who tend to be sociable animals. Their groups can range from tens to thousands. Each individual herd has a...
My graduate student Jorge and I are departing today for Panama, to excavate a fossil whale that was discovered by an undergraduate student working with Smithsonian Tropical Research Institute...
Yankee Whalers: An 1856 Currier & Ives print shows whalers harpooning a right whale. More about whales can be found in our Tale of a Whale photo essay .
This sea lion has been caught in killed in a giant drift net, or a “curtain of death,” as photographer Tom Woodward calls them. These giant drift nets, placed around the world’s oceans to catch...
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