The aggregate of actively swimming animals in a body of water ranging from microscopic organisms to whales.
swimming organisms that are able to move independently of water currents (opp. plankton). These include most fish, mammals, turtles, sea snakes, and aquatic birds.
Collective term for free-swimming organisms in aquatic ecosystems, as opposed to plankton.
active pelagic swimming animals.
(Also spelled necton.) Free-swimming organisms in aquatic ecosystems; unlike plankton, they are able to navigate at will (such as fishes, amphibians, and large swimming insects). [Go to source
Gr. nekhein: to swim] • Animals, such as fish, that can swim against currents of water. (Contrast with plankton.)
Organisms with swimming abilities that permit them to move actively through the water column and to move against currents (i.e. fish, crabs).
pelagic animals capable of swimming against a current such as fish and marine mammals
ocean organisms that are active swimmers, such as fishes, squid, and marine mammals.
Animals, such as fish and whales, that move independently of water currents between the bottom and surface of the ocean
pelagic animals such as adult squid, fish, and mammals that are active swimmers to the extent they can determine their position in the ocean by swimming.
Term for actively swimming organisms, essentially independent of wave and current action. Compare with plankton.
Pelagic organisms that are active swimmers; for example, adult squid, fish, and marine mammals.
free swimming animals.
free swimming organisms in lakes
all aquatic animals that can swim through the water against currents: marine mammals, fish, squid and some crustaceans.
swimming animals capable of navigation.
Strongly swimming organisms found in aquatic systems. Compare benthos, plankton.
The nekton includes all aquatic animals that actively swim in the water column, such as fish or squid. The nekton is one of three divisions of aquatic life; the others are the plankton ("drifters") and the benthos ("bottom dwellers").
free swimming aquatic organisms such as fish
free swimming organisms that are capable of moving through the water at will.
Aquatic organisms, such as fish and squids, that are powerful enough to swim against currents.
Nektonic (nektos is Greek for "swimming") animals are those marine creatures that are able to swim against the current. Sharks and rays are nektonic.