Nekton or necton (from the Ancient Greek: νηκτόν, romanized: nekton, lit. 'to swim') is any aquatic organism that can actively and persistently propel itself through a water column (i.e. swimming) without touching the bottom.

nekton, the assemblage of pelagic animals that swim freely, independent of water motion or wind. Only three phyla are represented by adult forms.

Feb 17, 2023 · Nektons are marine organisms that can swim and move independently of moving water. Apart from some mollusks and crustaceans, most nektons are vertebrates. Some examples of nektonic organisms are whales, fish, reptiles, and birds.

Aquatic organisms generally fall into three broad groups: plankton, nekton, and benthos. They vary in how they move and where they live. Plankton are tiny aquatic organisms that cannot move on their own.

Nov 26, 2024 · Aquatic Organisms. Aquatic organisms generally fall into three broad groups: plankton, nekton, and benthos. They vary in how they move and where they live. Plankton are tiny aquatic organisms that cannot move on their own. They live in the photic zone. They include phytoplankton and zooplankton.

Nekton are aquatic animals that swim or move freely in the water. Their movement is generally not controlled by waves and currents. Nekton include fish, squid, marine mammals, and marine reptiles.

Oct 11, 2017 · Plankton and nekton are two types of marine aquatic organisms. The main difference between plankton and nekton is that plankton are passive swimmers that are carried by the water currents whereas nekton are actively-swimming organisms that swim against the …

Nekton refers to living organisms in the Earth's water bodies that can swim independently of currents, such as fish, squid, octopus, sharks, and marine mammals. They are typically found in the water column but can also live close to the ocean floor.

Apr 17, 2021 · Animals are the only organisms capable of actively swimming. The main group of animals that make up nekton is fish. Other taxonomic groups that also have representatives in the nekton include mollusks, crustaceans, reptiles, birds, and mammals.

Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches available in the ecosystem. Three regions exist in a freshwater environment: profundal, pelagic, and benthic.