16. What are plankton, nekton
and benthos?

Gap-fill exercise

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Plankton, nekton and benthos the
three groups into aquatic living
beings may divided.

The plankton is by the algae and
animals that float near water
surface carried by stream. The
nekton is of animals that
actively and dive in water,
fishes, turtles, whales, sharks, . The
benthos comprises the
ecologically linked to the ,
including many echinoderms, benthonic
, crustaceans, molluscs, poriferans
and .