Entering the water from the shore, the first animal we spot may well be a mollusc such as a limpet or dog-whelk.
The shape of a limpet 's shell has a great deal to do with whether the animal remains securely attached to its rock or is ripped off and thrown onto dry land or into the waiting tentacles of a hungry sea anemone.
While Pisaster has a very broad diet that includes barnacles, limpets , snails, and chitons, mussels are its preferred prey.
Mussels and limpets are their primary food, but Black Oystercatchers prey on a wide range of shellfish and other creatures found along the rocky shore.
Secondary gills are found in Ancylids, which are freshwater limpets adapted to life in fast-flowing streams.
In coastal areas, they eat mussels, barnacles, and limpets .
Two species of limpets , previously unrecorded for the West Point area, have also been found during this study.
Slipper limpets have also made their way across the Atlantic, taking over areas off the coast of the British Isles and Northern Europe.
The ‘lock-and-key’ fit of homing limpets may have more to do with resistance to dislodgment than with desiccation.
It seems that as limpets creep across rocks, eating algae, they also eat chalk.