Marine organisms

• Free-swimming aquatic life
• The aggregate of actively swimming animals in a body of water ranging from microscopic organisms to whales
• Marine life in toto

Wiktionary Word definitions in Wiktionary
n. (context zoology English) All organisms in the ocean that are capable of swimming independently of currents.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
nekton \nekton\ n. The aggregate of actively swimming animals in a body of water ranging from microscopic organisms to whales.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1893, from German nekton (van Heusen, 1890), from Greek nekton , neuter of nektos "swimming," from nekhein "to swim" (see natatorium ).

WordNet Word definitions in WordNet
n. the aggregate of actively swimming animals in a body of water ranging from microscopic organisms to whales

Wikipedia Word definitions in Wikipedia
Nekton or necton refers to the aggregate of actively swimming aquatic organisms in a body of water. The term was proposed by German biologist Ernst Haeckel to differentiate between the active swimmers in a body of water, and the passive organisms that were ...