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A thresher shark uses its unusual tail fin for swimming and hunting.
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The Thrashing Thresher Shark

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Anemone porcelain crabs can avoid predators by not only living in anemones but by willing loosing appendages to avoid infection.
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The Porcelain Crab

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The velvet crab's aggressive nature has earned it the nickname devil's crab.
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The Velvet Swimming Crab

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Map of sites participating in Ocean Sampling Day 2014.
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Ocean Sampling Day Sites

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Hagfish Slime Thread
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Spin Hagfish Slime into Silk

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Blue Dragon nudibranchs are very common to the southeast coast of Australia and have a few color variations. Juveniles are white with blue rhinophores, and adults vary from dark purple to lavender to golden brown.
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Serpent Pteraeolidia

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A young visitor holds up his painted fish Gyotaku fish print at the Smithsonian's National Museum of Natural History
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Gyotaku Fish Print

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“I took this photograph of spinner dolphins in calm waters off the Ogasawara Islands, an archipelago in the Pacific Ocean about 600 miles south of Tokyo. When the sun briefly broke through the clouds, our shadow was mirrored in the water’s surface—an
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Spinner Dolphins Ogasawara Island, Tokyo, Japan

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paleobiology field equipment for excavating a fossil whale in central america
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Equipment for a Fossil Excavation

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A whale shark swimming in the water.
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Tagging Along With Whale Sharks

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Colorful crustaceans from the Caribbean island of Guadeloupe.
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Colorful Caribbean Crustaceans

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A Pontoh pygmy seahorse
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How Many Seahorse Species?

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