Aspect: A patch of green to blue warty, fork-tipped tentacles spread over a flattened oral disk, itself surrounded by thinner and taller tentacles connected by a translucent veil. Population: Occasional. Notable feature: Can be solitary or in tight groups as exemplified by photos below. Environment: Live on rocky structures Behaviour: The ensemble will immediately wrap itslef into the protected translucent veil controlled by the outer tentacles, as seen on one of the photos below.