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Artistic rendering of an ancient shark, Helicoprion.
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Illustration of Helicoprion

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Globotruncana falsostuarti -- a foram that lived about 75 million years ago, during the Cretaceous Period.
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Globotruncana falsostuarti

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The first known filter feeder is a large shrimp-like creature called Tamisiocaris borealis. The feather-like structures on its head were used to rake plankton from the sea.
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The First Filter Feeder

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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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Lenticulina secans-- this “benthic” foram lives on the seafloor. This specimen was collected from southeastern Tanzania.
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Lenticulina secans

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a fossilized ancient sea creature
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Wiwaxia

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An artistic rendering of an ocean landscape as it may have looked during the Archean Eon.
Slideshow

The Ocean Throughout Geologic Time, An Image Gallery

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World map during last ice age
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Ice Age Map of the World

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400 to 1,000 year old bones from an endangered seabird, the Hawaiian petrel. Bones such as these provide a window into the lives of seabirds before and after human arrival in the open ocean environments of the North Pacific.
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Petrel Bones Help Us Understand History

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Two nurse sharks hover over a baited cage
Lesson Plan

The Puzzle of Ice Age Americans

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a fossilized jawbone and tooth of an ichthyosaur
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An Ichthyosaur Jaw Bone

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An archaeologist arranges a deep-sea core.
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Sediment Cores

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