The other slug eats sea anemones and steals organelles responsible for stinging. The slug incorporates the stinging organelles into its cells, which gives it the ability to sting.

After one was safely captured, researchers were just as distracted as attacking fish would be when the sea slug lit up with a “starry” appearance across its back, too. 5.

The Elysia sea slug can shed its body and regrow it from the head down. Learn how this marine marvel cheats death.

Predators might overlook the sea slug's transparent body or be startled by its bioluminescence. "It kind of acts as a burglar alarm," Robison said. MBARI has been using ROVs since the late 1980s.

Sea slugs don’t shy away from the fish, crabs, sea turtles, or even other sea slugs that might want to take a bite out of them. Instead, the brightest and most patterned sea slugs are more ...

Elysia crispata, or the lettuce sea slug, has a ruffled exterior that is reminiscent of a head of iceberg lettuce, especially when it takes on a greenish hue. These lettuce-like folds are actually ...

The slugs are often dubbed the "butterflies of the sea", and most are harmless to humans, with only a few causing skin ...

Known for its uncanny resemblance to the TV character Shaun the Sheep, this adorable sea slug munches on algae to steal its ability to photosynthesize and become solar-powered.

A new species of sea slug, or nudibranch, was found off the southern coast of Iran and was a creamy, yellow color. ... → 2-foot-long predator found dead in fish trap in China.

Predators might overlook the sea slug's transparent body or be startled by its bioluminescence. "It kind of acts as a burglar alarm," Robison said. MBARI has been using ROVs since the late 1980s.