plankton - Tiny aquatic plants and animals that live in the open water of lakes and rivers, and that form the base of the ocean food chain.
(plankton - Tiny aquatic plants and animals; live; L:in the open water of lakes and rivers) (that; form; the base of the ocean food chain)
plankton - Tiny aquatic plants and animals that
live form
L:in the open water of lakes and rivers
the base of the ocean food chain