Definition that contains tidal zone
- marine mussel marine bivalve mollusk having a dark elongated shell; live attached to solid objects especially in intertidal zones
- mytilid marine bivalve mollusk having a dark elongated shell; live attached to solid objects especially in intertidal zones
- acorn barnacle barnacle that attaches to rocks especially in intertidal zones
- rock barnacle barnacle that attaches to rocks especially in intertidal zones
- balanus balanoides barnacle that attaches to rocks especially in intertidal zones