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Seahorses are the only fish species that can hold your hand! Unlike most fish that use their tails for swimming, seahorses, such as this big-belly seahorse (Hippocampus abdominalis), use their monkey-like tails to hold onto objects in their environment, li
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Seahorses Have Monkey-Like Tails

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Seahorses are hitchhikers. They can travel long distances across the ocean—farther than they can swim—by attaching themselves to floating seaweed and debris.
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Hitchhiking Seahorses

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This day octopus (Octopus cyanea) has shaped itself like seagrass or some coral so hide from predators or stalk prey.
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Camouflaged Octopus Blends In

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A small, brown eelpout fish.
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Adolf’s Eelpout

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The midwater scyphomedusa Atolla tenella, as seen under a microscope.
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Midwater Sea Jelly

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Alaskan king crab fisheries are on the rebound after years of unsustainable exploitation. New regulations mean that immediately after a haul is brought on board, the crabs are sorted and all females and under-sized crabs are released.
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King Crab Fishing in Alaska

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An array of teeth from ragged tooth sharks.
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Smithsonian Shark Teeth collection

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These are the first zoanthids (relatives of coral) recorded at a hydrothermal vent.
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Zoanthids on Hydrothermal Vent

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A cable connects a remotely operated vehicle (ROV) to a ship at the surface.
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ROV Tethered to Ship

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The robotic arm of the ROV Quest finds life at an undersea vent.
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Studying Hydrothermal Vent Life

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This autonomous operated vehicle will map areas of seafloor earthquakes.
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Launch of an Autonomous Benthic Explorer

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Algae has overtaken this coral reef off heavily populated Kiritimati, or Christmas Island.
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Unhealthy Coral Reef, Kiritimi, Line Islands

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