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An adult and juvenile killer whale frolic in the water.
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Menopausal Moms: A Mammal Mystery

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Like other cephalopods, the common cuttlefish (Sepia officials Linnaeus, 1758) possesses serious brain power.
Article

So You Think You're Smarter Than a Cephalopod?

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A close-up image of a fossil shark jaw with teeth.
Article

Shark Teeth Tell Great White Shark Evolution Story

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Extreme close-up of great white shark skin denticles.
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Biomimicry Shark Denticles

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Photograph of a transparent polka-dotted squid in the dark ocean.
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Cockatoo Squid

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Illustration of a four-legged proto-whale with webbed feet.
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Early Whale with Webbed Feet

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Color illustration of an ancient bivalve.
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Elevator Rudists

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A rendering of an underwater marine scene from the Cambrian Period, featuring an arthropod, annelids, and other animals.
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Cambrian Period (542 – 488 Million Years Ago)

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An amphipod within Arctic sea ice.
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Amphipod Under Arctic Sea Ice

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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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An Illustration of small tentacled fossils.
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Ancient Entoproct Community

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