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The first known filter feeder is a large shrimp-like creature called Tamisiocaris borealis. The feather-like structures on its head were used to rake plankton from the sea.
Photo

The First Filter Feeder

Today, filter feeders like clams, sponges, krill, baleen whales, fishes, and many...
A screenshot from the video showing a Palauan primitive cave eel.
video

Video of the Palauan primitive cave eel (Protanguilla palau)

A video of the Palauan primitive cave eel (Protanguilla palau) swimming in the...
Tue, 08/16/2011 - 14:31
A bright-green sea slug with a black background.
audio

Sea Slugs: One Species at a Time

Come one, come all! See the amazing, the astonishing, half-animal, half-plant!...
Mon, 07/11/2011 - 14:12
A narwhal breaches the surface, its tusk pointed to the sky
Article

Why a Tusk? The real-life unicorns of the sea and the tusks that make them famous

In the frigid Arctic Ocean, a mysterious toothed whale—the narwhal— resides...
August 2017
Kelps are large, brown algae that grow along coasts around the world, especially in cooler regions.

With Every Breath You Take, Thank the Ocean

When was the last time you thought about your breathing? Take a breath right now...
July 2017
Sea lions generate thrust, or forward propulsion, by bringing their fore-flippers together in big sweeping motions called “claps.”  When a sea lion “claps,” it stretches its flippers out to the sides and sweeps them down. Then it tucks its flippe

How Do Sea Lions Swim?

A family of tourists in Canada’s Steveston Harbor recently got a treat when a...
June 2017

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