Invertebrates
Common Limpet
Patella vulgata
As the tide drops on a Cornish shore, common limpets slide back to the exact spots on the rock where they began, clamping down tight as the waves retreat.
Overview
The common limpet, Patella vulgata, is a Not Evaluated sea snail of rocky shores across the northeast Atlantic. Its cone-shaped shell, home scar, super-strong teeth, and change of sex make it one of the most remarkable animals of the intertidal rock.
A snail with the toughest teeth
The limpet’s rasping tongue is lined with teeth made of a mineral and protein material that is among the strongest natural materials known, which it needs to scrape algae off hard rock.
Status
Not Evaluated globally, though widespread and abundant.
Common Limpet: common questions
How does a limpet cling to rock?
It clamps itself to the rock with a muscular foot and suction, holding on against pounding waves and the grip of predators.
What is a limpet's home scar?
It is the spot on the rock where the limpet returns after grazing, where its shell edge has worn a shape that fits perfectly.
Why are limpet teeth special?
They are made of a mineral and protein material that is among the strongest natural materials yet measured.
Do limpets change sex?
Yes, the common limpet is typically male when young and changes to female as it grows older and larger.