copepod
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Copepod. Image credit: NASA/JPL
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Any of the roughly 7,500 species of marine or freshwater crustacea
of the subclass Copepoda. Copepods are possibly the most numerous
type of animal in the world and are a major component of the ocean food
chain. Some live as parasites, especially
on fish. Their segmented, cylindrical bodies
have a single median eye and no carapace.
Copepods are typically 0.5–2 mm (0.02–0.08 in.) in length, although
some parasitic forms may be more than 30.5 cm (1 ft) long.
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• ZOOLOGY
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