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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...
Hagfish Slime Thread
Photo

Spin Hagfish Slime into Silk

Believe it or not, this unraveling thread is from hagfish slime. Hagfish are...
Dover Sole Skin
Photo

Close-Up of Dover Sole Skin

This close-up of the skin of dover sole (Solea solea) masks its true ability: to...
A look into a whale shark mouth.
Photo

A Smiling Gentle Giant

The whale shark (Rhincodon typus) is the largest fish on Earth. They spend most of...
A blenny fish against both a white and black backdrop, where you can see its beautiful color pattern.
Photo

A New Fish DROP-ping In

By diving in the Curasub, Smithsonian researchers with the Deep Reef Observation...
An unidentified moray eel held in researcher's hands.
Photo

A Baby Moray Eel, or a Really Small Adult?

This is an unidentified moray eel, collected from 650 feet off the coast of...
Photo of three sea creatures involved in a scientific mystery
Photo

Three Mystery Fish

Are these three fish related? All three—a whalefish, bignose, and...
A species of sea cucumber from the Arctic discovered by Census of Marine Life researchers.
Photo

Arctic Sea Cucumber

This species of deep-water sea cucumber (Elpidia belyaevi) was discovered by Census...
The robotic arm of the ROV Quest finds life at an undersea vent.
Photo

Studying Hydrothermal Vent Life

Census researchers manipulate the robotic arm of the remotely operated vehicle...
An underwater photo of a school of jacks and a scuba diver
Photo

Bigeye Jacks and Diver Balicasag, Philippines

"I was photographing this beautiful school of jacks when a diver slowly approached...
John Paxton, a scientist who studies marine life, looks into a microscope
Photo

Sleuth at Sea

Ichthyologist John R. Paxton of the Australian Museum studies freshly caught...
Smithsonian scientist who discovered new species in her laboratory
Photo

Smithsonian Scientist Discovers New Fish Species

Using genetic analysis combined with traditional study of morphology, Smithsonian...

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