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A close-up image of a fossil shark jaw with teeth.
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Shark Teeth Tell Great White Shark Evolution Story

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A translucent hyperiid on a black background with orange stripes along its head.
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Paraphronima gracilis

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Coral showing signs of disease
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Disease Takes Hold

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microscopic organisms of different shapes
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Protists of the Atlantic

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Sculptors prepare cast of blue whale's body
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Making a Whale Cast

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the stomach contents of a mosasaur
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Stomach Contents

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a coelacanth specimen and Smithsonian scientists
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Coelacanth and Scientists

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a coelacanth fish specimen
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Coelacanth Specimen

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mussels and shrimp
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Cold Seep Mussel Bed

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A scientist measures the length of a shark
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Sizing it Up

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a nurse shark and fish in dark water
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Nurse Shark

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