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see marine biologymarine biology,
study of ocean plants and animals and their ecological relationships. Marine organisms may be classified (according to their mode of life) as nektonic, planktonic, or benthic. Nektonic animals are those that swim and migrate freely, e.g.
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the division of the pelagic population that comprises the free-swimming animals. Nekton are capable of withstanding the force of the ocean current and are able to travel over long distances. Fish, squids, cetaceans, pinnipeds, sea snakes, turtles, and penguins constitute the nekton group. A streamlined body shape and a well-developed locomotory apparatus are characteristic of nekton.

In complete contrast to the nekton are the plankton, which are helplessly carried by the ocean currents. The micronekton, represented by animals capable of limited active locomotion, occupy an intermediate position between the plankton and nekton. The micronekton include fry and small species of fish and squids, the larger members of the suborder Natantia, and the euphausiids.


(invertebrate zoology)
Free-swimming aquatic animals, essentially independent of water movements.
References in periodicals archive ?
Though W&P has used both Nekton and Fidap to analyze fluid dynamics over individual elements, the company's own model goes a step further by assembling all the localized information.
Pools supported zooplankton and periphyton with an associated sparse nekton invertebrate community which were utilized by the fish.
Cory's marquee sponsors include: O'Neill, Rockstar Energy Drink, Anarchy Eyewear, Freestyle Watches, Placebo Surfboards, and Nekton Surf Shop.
Food and dietary variability of pelagic nekton off Oregon and Washington, 1979-1984.
Nekton is selling its first vehicle this year to a research team studying underwater locomotion, according to Pell.
The nekton, plankton, and benthos have been catalogued by Simmons (1957) and were extensively studied by Hildebrand and King (1979).
Purchase of Nekton Research LLC, net of cash received
15]N) of dominant nekton species and basal food sources were used to compare food web characteristics.
Spatial factors such as habitat type and proximity to other hydrodynamic systems are important factors that can influence the distribution of nekton within an estuarine food web.
1996) examined the diet of juvenile Opakapaka from the nursery in Kaneohe Bay and discovered that it was composed of crustaceans (shrimps and stomatopods), gelatinous organisms (salps and heteropods), nekton (fishes and squids), and benthic organisms (demersal octopods, echinoids, and microgastropods).