Also known as Botrylle Violet, Bulbous Tunicate, Chain Tunicate, Colonial Ascidian, Colonial Tunicate, Compound Ascidian, Invasive Colonial Tunicate, Invasive Tunicate, Lined Compound Ascidian, Lined Compound Tunicate, Orange Cloak Sea Squirt, Orange Sheath Tunicate, Sea Squirt, Sheath Tunicate, Tunicate, Violet Tunicate, Zooids.
Found over shallow coastal waters attached in irregular flat sheets to surfaces of boats, docks, harbours, macroalgae, mussel and oyster beds, reefs, rocks etc, almost any solid surface!
They feed on zooplankton.
Length - 30cm
Depth - 0-2m
Mussel and oyster farmers consider this tunicate a pest! Possibly spread around the world by shipping industries.
Ascidian, also known as tunicates because their bodies are covered by a "tunic" a tough cellulose-like covering.
The other common name is sea squirt because when threatened they sometimes eject a jet of water. Ref: https://en.wikipedia.org/wiki/Botrylloides_violaceus