. . . . . "The Capitella capitata is a polychaete worm that grows up to 10 cm in length. It is often blood-red in colour. The species is sedentary and fragile, with a flexible body.Capitella capitata occurs on muddy sand, gritty sand, fine sand or rich mud on the lower shore to sub-littoral."@en . . "Capitella capitata"@en . . . .