Plankton

Plankton are a type of drifting water dwelling lifeform. Plankton refers to a life-style of moving as water currents dictate and can be animals, plants or bacteria.

Cilas XII is home to a species of flowering plankton. (DS9 novel: Devil int he Sky)

Plankton loaf is traditional Japanese food made from Plankton which Keiko O'Brien regularly ate in her youth. (TNG episode: The Wounded)