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X-Ray Image of a Smalltooth Sawfish

The long toothy rostrum or “saw” gives sawfish their common name. They use the...

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Arctic Ice diver Shawn Harper “stands” on the ice ceiling above him....

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“Leatherback turtles are critically endangered, and this young hatchling is a...

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“In late November, land-locked polar bears gather along the Hudson Bay to await...

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Harp seals are protected in the United States by the Marine Mammal Protection Act....

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These star-shaped grains of sand, collected from southern Japan, look like...