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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 shell placed in seawater with increased acidity slowly dissolves over 45 days.
Photo

Shell Dissolves in Seawater

Over a 10-year period, NOAA scientists have collected 72,000 seawater samples, and...
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...
Color illustration of an ancient bivalve.
Photo

Elevator Rudists

These "elevator" rudists, an ancient bivalve, used one long heavy valve to anchor...
Notice the pink tentacles, which “recliners” used to filter feed.
Photo

Recliner Rudists

Where ocean currents were strong, ancient rudist “recliners” lay unattached on...
Rudist clams are mollusks that went extinct about 65 million years ago.
Photo

Rudist Clams

Rudist clams are mollusks that went extinct about 65 million years ago. They were...
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...
A rendering of an underwater marine scene depicting life ~145-65 million years ago, when rudist clams were the major reef builders.
Photo

Carbonate Reef (Cretaceous Period: 145 - 65 Million Years Ago)

This illustration shows the edge of a warm inland sea during the Cretaceous Period,...
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  • Ocean Life
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    • Plankton
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    • Coral Reefs
    • Deep Sea
    • Coasts & Shallow Water
    • Poles
    • Census of Marine Life
  • Planet Ocean
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