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copepod
Copepods (; meaning "oar-feet") are a group of small crustaceans found in the sea and nearly every freshwater habitat. Some species are planktonic (drifting in sea waters), some are benthic (living on the ocean floor), and some continental species may live in limnoterrestrial habitats and other wet terrestrial places, such as swamps, under leaf fall in wet forests, bogs, springs, ephemeral ponds, and puddles, damp moss, or water-filled recesses (phytotelmata) of plants such as bromeliads and pitcher plants. Many live underground in marine and freshwater caves, sinkholes, or stream beds. Copepods are sometimes used as biodiversity indicators.
==Classification and diversity==
Copepods form a subclass belonging to the subphylum Crustacea (crustaceans); they are divided into ten orders. Some 13,000 species of copepods are known, and 2,800 of them live in fresh water.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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