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Have you ever seen a creature so unusual? This fish (22 cm long) is called a sea toad and studying them requires luck and the opportunity to descend into the deep waters where they...
Travel to a world of perpetual night--the deep ocean hydrothermal vents near...
Zombie worms don’t crave brains: instead they seek bones. The 1 to 3 inch (2 to...
Artist Shih Chieh Huang spent a good part of 2007 exploring specimens of deep-...

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Watch as a team of wave chasers heads to Somoa where they search for an undersea river five kilometers beneath the ocean's surface. There they measured skyscraper-sized internal gravity waves, which break and produce strong...
The deep-sea dragonfish ( Stomiidae ), also called the barbeled dragonfish,...
This tiny, shrimplike creature is no more than 2.5 centimeters (1 inch) long...

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You may have seen the sparkle of fireflies on a summer’s night. The fireflies produce light through a chemical reaction in...

The Ocean Blog

What happens to deep-sea coral samples after they are collected? In this image gallery, see some of the ways ocean scientists sort, measure, photograph, and study them. Learn more in the multimedia...
Ocean scientists discovered this 1.5-m (5-ft) tall yellow bamboo coral in 2007 off the coast of Hawaii in 1,459 m (4,787 ft) of water. It is thought to represent a new genus. Learn about more deep-...
Tropical hatchetfish ( Argyropelecus lychnus ), like the one shown in this X-ray photograph, live in the dark depths of the ocean ; this specimen was collected at about 2,789 feet (850 meters) in the...
The research submersible Alvin uses bright lights to illuminate the dark seafloor. Built in 1964, it has made more than 4,400 dives. It can carry two scientists and a pilot as deep as 4,500 meters (...
An orange brisingid starfish sits on a large reef of Lophelia pertusa, cold-water corals in the Gulf of Mexico, at 450 m depth as a school of fish swims above. They have many arms—up to 20!—covered...
Sample the surprising diversity of deep-sea corals. See some of the ways they differ in color, shape, and size. Explore more in the multimedia feature " Coral Gardens of the Deep Sea ."
I still haven’t gotten beyond the ‘gee whiz’ factor of studying communities of animals in deep-sea coral habitats. Climbing over undersea mountains and along the steep cliffs of submarine canyons...
The pink strands of this single deep-sea coral harbor a variety of marine life. Sea whips are gorgonian corals and have flexible skeletons. See more pictures of coral in our Deep-sea Corals article.
Zombie worms ( Osedax roseus ) eat away at the bones of a dead whale that has fallen to the seafloor in Sagami Bay, Japan. These bizarre worms rely on whale bones for energy and are what scientists...
The branches of a primnoid coral in the genus Calyptrophora provide a habitat for galathaoid crabs. Learn more about the deep-sea coral reefs in our Deep-sea Corals article .
Watch a Discovery video on Smithsonian squid expert Clyde Roper’s search for giant squid in Kaikoura Canyon off the coast of New Zealand. More about giant squid can be found in our Giant Squid...
Take a tour of the Alvin, a three-person submersible that allows scientists to explore the depths of the ocean. This is an excerpt from the full Deep Ocean Explorers video. More about deep ocean...
This tiny, shrimplike creature is no more than 2.5 centimeters (1 inch) long, but it’s as ferocious as a shark. Its giant eyes spot prey. Huge claws grab the prey, and a tiny mouth rips it to shreds...
This lizardfish ( Bathysaurus ferox ) rests on the ocean bottom with its head slightly elevated—waiting to snatch prey with its large mouth and sharp teeth. It lives at depths of 600-3,500 meters (1,...
Now that the Census of Marine Life is over, we’re checking in with some of the researchers to hear about their favorite expedition, what they learned, and how the Census and its findings continue to...
It is a well-known fact that for animals living in the deep sea, food can be scarce. The food that is around usually rains down from above as dead animals and organic particles from plankton living...
The long barbel on the chin of this dragonfish ( Stomias boa ) has a glowing tip that may attract prey. With its large mouth and sharp, curved teeth, the fish makes quick work of any prey that...
The yeti crab ( Kiwa hirsuta ), an unusual, hairy crab with no eyes, was discovered in 2005 on a hydrothermal vent near Easter Island. It represents not only a new species but also a new genus— Kiwa...
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