About Chelidonura hirundinina (Quoy & Gaimard, 1833)
This species reaches a maximum size of 40 mm, and individuals are often smaller than this maximum. Its body background color may be red, orange, dark brown, or black. The body is marked with blue, black, and orange stripes, with a white marking located near the posterior end of the animal. Having two fairly long "tails" at the posterior end is a characteristic trait of the entire genus Chelidonura that this species belongs to. Well-developed sensory cilia are present on the anterior edge of the animal's head, and these cilia are used to locate prey. The species specific epithet hirundinina is a Latin word meaning "little swallow", chosen in reference to this species' swallow-tailed appearance.
