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A 3-D reconstruction of the skull of a fin whale fetus.
Article

Keeping An Ear Out For Whale Evolution

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A photo of a swimming Protanguilla palau, the newly discovered genus and species of eel
Article

Scientists Call New Eel Species A Living Fossil

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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
Article

How Do Sea Lions Swim?

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An Illustration of small tentacled fossils.
Photo

Ancient Entoproct Community

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A screenshot from the video showing a fiddler crab with a large claw.
Video

Claws Out: Fiddler Crabs Do Battle

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Charles Darwin's first diagram of an evolutionary tree appears in his First Notebook on Transmutation of Species (1837).
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Darwin’s Evolutionary Tree Diagram

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Dr. Stephen Cairns, a Smithsonian research zoologist, studies deep-water corals.
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Dr. Stephen Cairns

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Extreme close-up of great white shark skin denticles.
Photo

Biomimicry Shark Denticles

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An amphipod within Arctic sea ice.
Photo

Amphipod Under Arctic Sea Ice

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Diagram of narwhal anatomy and tusk function
Photo

Narwhal Anatomy

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Color illustration of an ancient bivalve.
Photo

Elevator Rudists

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