“The sea slug Elysia chlorotica is a small, unassuming creature that performs a remarkable feat: It eats algae and steals its ...

One of the few animals able to photosynthesize, this tiny invertebrate acquires chloroplasts by munching on Avrainvillea, a ...

Usually, sea slugs use their rough tongues to scrape food off the seafloor. But this mysterious, bioluminescent mollusk uses its hood to snatch its food mid-swim.

Scientists have discovered two new species of wart sea slugs in North Sulawesi, Indonesia: Phyllidia ovata and Phyllidia ...

Scientists found a bioluminescent deep-sea animal with a “gelatinous” body and discovered a new species, a study said. Photo from MBARI From a research vessel off the coast of California, a ...

Off the western coast of Mexico, a “transparent” sea creature with horn-like appendages swam through the water, or it tried to at least. But something caught it and pulled it toward the surface.