Kingdom: Animalia

Phylum: Chordata

Class: Ascidiacea

Order: Stolidobranchia

Family: Styelidae

Genus: Dendrodoa

Species: D. grossularia



Dendrodoa grossularia is a solitary, reddish-brown sea squirt, up to 2 cm long and 1.5
cm in diameter, which occurs singly or aggregated in dense, bumpy clusters. Individuals
are rounded in shape and bright red or orange red in colour. The two siphons project
from the upper side of the body and are round in cross-section. In silty conditions the test
is often discoloured and becomes brown or blackened. The shape of individuals varies
from flattened and rounded on a spreading base when solitary, to upright, elongated and
cylindrical when aggregated. The two short but conspicuous siphons are square or
four-lobed in outline when partly contracted, but round and flared when actively

It is native to the northeastern Atlantic Ocean where it is common in shallow water and
on the shore in exposed rocky sites and Widely distributed, and locally common, around
British and Irish coasts. Not recorded in northeast Scotland, the coast south of the
Humber to the Stour and the south coast of Ireland.