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The Model Megalodon

Take a trip to the National Museum of Natural History in Washington, D.C. and you...

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Ancient Turtle

The first fully marine turtles emerged during the Cretaceous Period, a span of time...

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REMUS the Robot

The REMUS autonomous underwater vehicle (AUV) is equipped with many sensors,...

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Five Methods for Tracking the Ocean's Motion

From the time of Aristotle until the European Renaissance, a roughly 1,000-year...

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The Megalodon

Carcharocles megalodon was once the most fearsome predator to reign the seas. This...

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An Ancient Turtle

Eunotosaurus, a reptile who lived about 260 million years ago during the Permian...

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One Large Turtle: Protostega gigas

This Protostega gigas is a species of extinct sea turtle from 85 million years ago....

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Cold and Stunned

Leah Desrochers, an employee of the Massachusetts Audubon Society, holds a stranded...

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Eye of the Turtle

A closeup of a hawksbill turtle eye. ...

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A Green Sea Turtle

Sea turtles are adapted for a life at sea. Their streamline shell and flippers make...

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Weight of the World

In Hindu mythology, the earth is supported by four elephants standing on the back...

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Baby Turtles

Temperature determines the sex of a baby turtle as it grows in the egg. Rising...