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This 1874 illustration of California gray whales (Eschrichtius robustus) shows a group of individuals at the edge of their modern day range in the North Pacific Ocean, blocked from traveling further east into Arctic waters by thick ice barriers.
Article

In the Arctic, the Times, They Are a-Changin: You Can Pitch in to Understand How

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Riftia tubeworm (Riftia pachyptila) colonies near hot spring.
Article

The Microbes That Keep Hydrothermal Vents Pumping

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This family tree shows how the ancestors of whales moved gradually from land to sea.
Photo

The Whale Family Tree

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A rendering of an underwater marine scene from the Cambrian Period, featuring an arthropod, annelids, and other animals.
Slideshow

A Collection of Cambrian Fossils

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Photograph of the underside of a gelatinous octopus with a bright yellow bioluminescent ring around her mouth.
Slideshow

Bioluminescent Animals Photo Gallery

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