Mollusks

A female giant squid caught off the coast of Japan mated with a single male in her lifetime, a surprising finding given what little is known about these creatures' reproduction.

An underwater robot captured footage of the rarely seen glass octopus in the remote Pacific.

Scientists hope to identify the genes that the animals use to adapt to extreme environments.

A weird polka-dotted blob that washed ashore in North Carolina has finally been identified.

A new species of Dumbo octopus, nicknamed the Emperor Dumbo, has been dredged up from the deep sea.

A new study looks at how scientists captured the world's first (and second) recordings of a giant squid in its natural habitat.

At least 90 mysterious blobs of underwater jelly have been sighted near Norway and the Mediterranean Sea, and researchers finally know what they are.

A well-preserved fossil reveals that 180 million years ago, an eight-armed predator suffocated with its prey.

Octopuses can "see" light with their arms, even when their eyes are in the dark, researchers have found.