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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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Two nurse sharks hover over a baited cage
Lesson Plan

Coral Adaptations Inquiry Lab

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Two nurse sharks hover over a baited cage
Lesson Plan

Coral Adaptations

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Polar bears have evolved to survive in the Arctic.
Photo

Polar Bear on the Ice

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A researcher holds an arm bone from a "toothed" mysticete whale from Vancouver Island.
Article

Dispatches from the Field: Treacherous stream crossings and a new fossil find

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Nick Pyenson points to a skull and skeleton of a fossil whale.
Article

Excavating a "toothed" baleen whale from Vancouver Island

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Tiny "flakes" of marine snow.
Article

Marine Snow: A Staple of the Deep

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A photo of a squid using bioluminescence to hide in the deep sea.
Overview

Bioluminescence

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Japanese scientists videotaped this female giant squid, alive, at the water's surface
Overview

Giant Squid

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