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Smithsonian researchers eat a meal in preparation for a fossil excavation
Slideshow

A Squalodontid Success

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the skull of a mosasaur
Article

Meals of the Mighty Mosasaur

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dugong feeds on seagrass in the Red Sea
Photo

Dugong Feeding

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On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
Overview

Sea Level Rise

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Illustration of the Paleozoic shallow water habitat.
Photo

A Mississippian Marine Habitat (359 - 318 Million Years Ago)

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

Cambrian Period (542 – 488 Million Years Ago)

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Illustration of a four-legged proto-whale with webbed feet.
Photo

Early Whale with Webbed Feet

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An illustration of multispecies communities of dugongs from India, Mexico and Florida
Photo

Multispecies Communities of Seacows

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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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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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serrations from sharks on a fossilized whalebone
Photo

Bite Marks From the Past

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A shark tooth embedded in a bone
Photo

A Tooth Left Behind

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