Explanation of nekton-plankton-benthos
Give a brief explanation of the term nekton, plankton, and benthos.
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Plankton, benthos, and nekton are three groups in which aquatic living beings might be separated. The plankton is formed by algae and undersized animals which float close to the water surface carried by stream. Nekton is composed of animals which actively swim and submerge in the water, such as fishes, whales, sharks, turtles, and so forth. The benthos comprehends the animals ecologically associated to the bottom, comprising many benthonic fishes, echinoderms, mollusks, crustaceans, poriferans and annelids.
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