ETYM New Lat., from Greek plagton, neut. of plagtos wandering, plazesqai to wander.
The aggregate of small plant and animal organisms that float or drift in great numbers in fresh or salt water.
Floating or minute swimming organisms of ocean.
Small, often microscopic, forms of plant and animal life that live in the upper layers of fresh and salt water, and are an important source of food for larger animals. Marine plankton is concentrated in areas where rising currents bring mineral salts to the surface.