
Dark brown to green or black body. Can form clusters up to 1 m across.
Larger, tube-dwelling worm. Often aggregates in clumps. Protected by long, soft, grayish, parchment-like tubes.
Smooth opaque tunic with a squat, roundish body. Usually orange or red.
Round, thick shell. One of the largest scallops in the world. An orange mantle with sensory tentacles and blue eyes fringes the shell. Permanently attached to substrate, does not detach and swim around.