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Convict surgeonfish are the roaming sheep of the reef but, instead of noshing on grass, they feed on algae.
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Surgeonfish: Indicators of a Healthy Reef

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This map shows the localities represented by the Gulf of Mexico collection of the Smithsonian Institution’s National Museum of Natural History.
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Map of Gulf of Mexico Collection

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Photo collage of six species of invertebrates.
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Invertebrates from the Gulf of Mexico

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a colored shakemap from the M5.8 Virginia Earthquake depicts the shake range and epicenter of the earthquake
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Map of the Magnitude 5.8 Virginia Earthquake of 2011

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X-ray Image of a Monterey Skate
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X-Ray Image of a Monterey Skate

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X-ray image of a winghead shark
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X-Ray Image of a Winghead Shark

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A great white shark gaping its jaws at the surface of the water; gaping is used as a form of communication in sharks
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Gaping Jaws of a Great White Shark

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The weedy sea dragon male can hold around 250 eggs in his pouch.
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The Dragon of the Sea

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