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The First Filter Feeder

Today, filter feeders like clams, sponges, krill, baleen whales, fishes, and many...

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For a long time, scientists thought that some small tentacled fossils were early...

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This species of deep-water sea cucumber (Elpidia belyaevi) was discovered by Census...

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Census researchers manipulate the robotic arm of the remotely operated vehicle...

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This early whale was well suited to life at sea. But it also may have spent time on...

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Sirenians, or seacows, are a group of marine mammals that include manatees and...