Limpet
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Limpets are a group of aquatic snails with a conical shell shape and a strong, muscular foot. This general category of conical shell is known as "patelliform". Existing within the class Gastropoda, li
The true limpet species Patella vulgata on a rock surface in Wales
Underside of a Patella vulgata specimen
Limpet homescar found at the Bay of Skaill
Barnacle
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Barnacles are arthropods of the subclass Cirripedia in the subphylum Crustacea. They are related to crabs and lobsters, with similar nauplius larvae. Barnacles are exclusively marine invertebrates; ma
Limpet
…before settling to the bottom and becoming an adult animal. True limpets in the family Patellidae live on hard surfaces in the intertidal zone. Unlike barnacles (which are not molluscs) and mussels (which are bivalve molluscs that cement themselves to a substrate for their entire adult lives), limpets are capable…
Chthamalus stellatus
Whale barnacles on a humpback whale
Nauplius larva of Elminius modestus
Cypris larva of Amphibalanus improvisus