Shell conical with fine ribs and a hole in the tip. Under stones.
Sometimes seen on some of our shores.
Shell conical, white, pinkish or reddish. Inside a shell occupied
by a hermit crab. Also on rocks. Commonly seen on our Northern shores.
Shell white, flat. Found on the inside of a shell occupied by a hermit
crab, also on underside of horseshoe crabs. Commonly seen on our Northern
Shell flat ear-like with a spiral of 5-10 small holes. Rocky and rubbly
reefs. Sometimes seen on our northern shores.
tubes on hard surfaces. Tube opening 1-2cm in diameter, coils 10cm
long or more. Rocky shores. Sometimes seen on our Northern shores.