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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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Two nurse sharks hover over a baited cage
Lesson Plan

The Methane Circus

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Forams are tiny single-celled organisms.
Slideshow

Foraminifera

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Blue whale skull being installed at National Museum of Natural History.
Article

When Did Today’s Whales Get So Big?

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Offshore Peru, during the Eocene (~56-34 million years ago), showing two archaeocetes (ancient whales): Ocucajea picklingi and Supayacetus muizon.
Article

New Archaeocetes from Peru Are the Oldest Fossil Whales from South America

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the skull of a mosasaur
Article

Meals of the Mighty Mosasaur

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

Sea Level Rise

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An ancient whale ancestor
Video

Evolution of Whales Animation

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A screenshot from video showing Brian Huber behind a microscope.
Video

Smithsonian Paleobiologist Brian Huber

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Screenshot from video showing tiny foraminifera.
Video

Foraminifera on the Seafloor

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A Hawaiian petrel in flight
Article

4,000 Years of Marine History through the Eyes of a Seabird

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