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Two scientists peer out into the ocean from inside the Curasub, a 5-person submersible
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Inside the Submarine

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The Autonomous Reef Monitoring Structure was developed to help scientists study coral reef diversity and have now been adopted broadly to study diversity around the world.
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Reef Monitoring Structure

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A coral has just spawned. Each of the hundreds of polyps releases a small pink bundle of sperm and eggs.
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Coral Spawning by Moonlight

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The "Lower Invertebrates" exhibit in Smithsonian Institution Building in 1901 included models of a giant squid and an octopus.
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More Than a Century of Smithsonian Marine Science

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A screenshot of some of Smithsonian's marine story windows in Google Earth
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Smithsonian Marine Collections on Google Earth

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Coral Head Near Pearl and Hermes Atoll, Hawaii
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Pearl and Hermes Atoll Coral

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A landscape photo of a shoreline with tall grass-like plants lining the water's edge.
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Phragmites australis

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Home is where the hull is: Since the dawn of seafaring, humankind has had to deal with pesky creatures, such as barnacles, that “foul” ship hulls and boat propellers like this one.
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Boat Propeller Fouled With Barnacles

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Two coral trout swim on a reef in Fiji.
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Coral Trout in a Fiji Reef

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Three Killer whales (Orca) swim along side researchers.
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Researchers Studying Killer Whales

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The sea star Odontaster validus and sea urchin Sterechinus neumayeri are often found living in association with one another along the Antarctic coastline, here during the Census of Marine Life.
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Sea Stars and Urchins off Antarctica

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A pink sea cucumber covered in small spike-like protrusions.
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Sea Cucumber: One Species at a Time

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