Lottia scabra is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Lottiidae, one of the families of true limpets.
Lottia gigantea, common name the owl limpet, giant owl limpet or solitary giant owl limpet, is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Lottiidae. Its genome has been sequenced at the Joint Genome Institute.
The California mussel, Mytilus californianus, is a large edible mussel, a marine bivalve mollusk in the family Mytilidae.