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Nekton
Free-swimming organisms such as mussels, worms, and barnacles. Many benthic organisms live attached to hard surfaces. Decomposers are also present in aquatic ecosystems
Characteristics of Benthic and Littoral zones
Near the shore. Aquatic life is diverse and abundant. The bottom of a lake or pond and is inhabited by decomposers, insect larvae, and clams.
Plankton
Organisms that cannot swim against currents so they are drifters.
Benthos
is the community of organisms which live on, in, or near the seabed, also known as the benthic zone.
