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The Capitella capitata is a polychaete worm that grows up to 10 cm in length. It is blood-red in colour and has the most earthworm-like appearance of all polychaetes. The species is sedentary and fragile, with a flexible body.
Habitat information: Capitella capitata occurs on muddy sand, gritty sand, fine sand or rich mud on the lower shore to sub-littoral. It may be found under pebbles or small stones, with the burrows at or near the surface of the sediment.
