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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...
Killer whales ( Orcinus orca ) are master hunters, using speed, camouflage, and...
In honor of Mother's Day, the Citizens of the Sea blog salutes ocean-going...
How do we know where ocean animals swim day and night? Scientists are getting...

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Illustrator Drew Christie created this light-hearted short film about how humans could really learn something from whales. Check it out and learn about all the different cetaceans and our commonalities, such as a shared love for...
This close-up photo of a right whale's head shows dozens of hitchhikers—tiny...
West Indian Manatees, Trichechus manatus , are found in warm, shallow...

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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...

The Ocean Blog

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...
Florida Manatee ( Trichechus manatus latirostris ) swimming within a fresh water spring on Crystal River in Florida. Note the tree roots on the right of the frame which make up a portion of this...
During the winter and spring months, tagged fur seals migrate thousands of miles in open water. Scientists are watching this species closely in order to determine the mystery of its population...
Watch a recorded webcast about the latest efforts in Greece to study and save the critically endangered Mediterranean monk seal. Centuries of human exploitation and habitat destruction have caused...
“I took this photograph of spinner dolphins in calm waters off the Ogasawara Islands, an archipelago in the Pacific Ocean about 600 miles south of Tokyo.When the sun briefly broke through the clouds...
Toothed whales, like this common dolphin ( Delphinus delphis ) and its calf, live in social groups called pods. The mother and calf form a pair that shares a long-term bond. Read more about toothed...
This may look like a mane of hair, but it’s actually baleen from a North Atlantic Right Whale. Although it looks soft and furry, dried baleen is quite stiff, which made it useful for creating...
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...
Dugongs , along with manatees , make up a group of marine mammals called sirenians or seacows . In the modern world, only one species of seacow is found in any one place in the world. However, the...
Many people love seals and sea lions, and it's easy to see why: they’re playful, adorable, and quite photogenic. But what is the difference between seals and their cousins the sea lions? Both have...
A Grey Seal ( Halichoerus grypus ) poses in the waters off Acadia National Park in Maine. Grey seals live on both coasts of the Northern Atlantic, with breeding colonies in Great Britain, Ireland,...
The dolphins in this picture are spinner dolphins, ( Stenella longirostris ) named for how they spin in the air when they leap from the water. Spinner dolphins have four sub-species: the eastern...
The Wadden Sea site in Germany and the Netherlands was inscribed on the World Heritage List in 2009. It’s a large relatively flat coastal wetland environment, with tidal channels, sandy shoals, sea-...
When a critically endangered North Atlantic right whale becomes entangled in fishing gear, members of a response team from the Atlantic Large Whale Disentanglement Network spring into action. In the...
Phoenix, the North Atlantic right whale whose replica hangs from the ceiling of the Sant Ocean Hall at the National Museum of Natural History, was sighted with a calf off of Amelia Island in Florida...
Researchers frequently track North Atlantic right whales from ships or from the air. This video of Phoenix (left) was captured in March 2009 on George’s Shoal, east of Chatham, Mass. Learn more about...
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...
The Surtsey site in Iceland was inscribed on the World Heritage List in 2008. Surtsey is a new island, formed by volcanic eruptions that took place from 1963 to 1967. The site is unique, because it's...
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