Botrylloides
Botrylloides is a genus of ascidian tunicates in the family Styelidae. Description. Like "Botryllus", "Botrylloides" are flat sheets of organisms which can be found covering ropes, boat hulls, horseshoe crabs, seaweeds, and any still or slow-moving object in saltwater. Also both are considered to be invasive Ascidians, found in many ports around the world. Invasive tunicates such as these, "Didemnum" sp., and "Styela clava" are a problem for shellfish and other marine life populations, and cause fouling of boats and piers. Species within the genus "Botrylloides" include: Species names currently considered to be synonyms: