The food source for this sea slug is not yet known.

Then, suddenly, at quarter of one, I turn into a sea slug.

This sea slug is up to 6 cm in length.

These nematocysts, however, are not really a part of the sea slug.

This sea slug has evolved the ability to harness the sun's energy for its own use.

Michael picked up a sea slug with his chopsticks and bit one end of it.

They are a main food source for sea slugs.

He studied sea slugs as a model for brain function in more complex animals.

One group took the same path as the sea slugs did in more recent times and lost their shells altogether.

The camera got so close her tongue resembled some kind of giant sea slug.