Project Description

During a shore dive at ten mile point, I saw this fantastic reddish-brown speckled compound tunicate (Trididemnum alexi) with a crab resting on top of it.  This is an amazing high current dive site in Victoria with a wide variety of invertebrate life.  This compound tunicate can be reddish-brown, mauve, or tan in colour, and has an abundance of openings on its surface which give it a speckled appearance.  This is a fairly recently described species of compound tunicate by Gretchen Lambert in 2003, and she was kind enough to ID this tunicate photo as Trididemnum alexi.  It’s interesting that there is also another tunicate that has totally covered the carapace of the crab!  The speckled compound tunicate has a range from British Columbia to Washington.