Project Description

During a dive I was surprised to see these large gaper clam (Tresus capax) shell valves resting on the ocean floor.  This clam is called a gaper because the shell valves do not fully close together, and are flared out around the siphon.  This large clam lives in mud, sand and gravel, with valves that can grow to around 7 inches (18 cm) in length.  The gaper clam has a range from central Alaska to southern California.