What's the rarest ocean animal? Discover the rare and endangered ocean animals along with those that are rare because they're ...

The ocean covers more than 70 percent of Earth’s surface, yet we’ve explored less of it than we have the surface of the moon.

Earth's vast oceanic biodiversity remains largely unexplored, with only a fraction of an estimated two million total living ...

The body of the bumpy snailfish has a jelly-like consistency, which is essential for surviving in the deep sea. This gel-like ...

The gulper eel ( Saccopharynx lavenbergi), also called a pelican eel, is roughly a meter of tail and mouth. This unusual fish, the only species in the genus Eurypharynx, slinks through the water as ...

Notable sightings along the way included the discovery of an extensive crinoid meadow at a depth of 9,100 meters (29,855 feet ...

Freshwater and sea turtles may look similar, but neither one could survive in the other's territory for these reasons.

Thousands of sea cucumbers blanket over two miles of the Seaside, Oregon, beach in a rare natural phenomenon. The translucent creatures can't return to the ocean on their own.

The ocean is home to some of the most awe-inspiring creatures on Earth, many of which dwarf anything found on land. From massive whales to elusive deep-sea dwellers, these giants of the sea ...

From worms with squid-like tentacles to fish with teeth on their tongues, here are some of the most alien-looking creatures in the deep ocean. When you purchase through links on our site, we may earn ...