Psolidium bidiscum Lambert 1996

This closeup of the anterior end shows the small oral tentacles around the mouth. Two tentacles are currently folding inside the mouth, probably for feeding.

This individual is living on the inside of a dead scallop shell.

Psolidium bidiscum from off Northwest Island at about 12 m depth. Scale = mm (Photo by: Dave Cowles, July 2005)

Indian Arm, British Columbia