Kingdom: Animalia

Phylum: Chordata

Class: Ascidiacea

Order: Pleurogona

Family: Styelidae

Genus: Styela



These are sea squirts, characterized by their brown or yellow, rough and wrinkled
surface. They typically have a length of 8–12 cm (3.1–4.7 in), but can reach up to 20 cm
(7.9 in). They can be found on virtually any hard surface (such as rocks, buoys, pilings
and shells of mussels) and occasionally on seaweed. and they are filter feeders filter
approximately 150 mL of water / minute / gram body weight. Occur at least 25 m (82 ft),
below the surface can be found waters of Northern Atlantic, Pacific Ocean and the
Arctic, Bering Sea and the Canadian Arctic Archipelago. Styela clava is a hardy species
that can live at temperatures between −2 and 27 °C (28–81 °F), but only breeds above
15 °C (59 °F).