Mainly for protection to potential predators like seabirds (if the tide is out)
The limpets have a hard shell because it acts as a barrier to wave action. The shells are smooth on the inside and can be either smooth or ribbed on the outside.
Gastropods (slugs, snails, limpets) have one shell. Some slugs lack shells entirely, and some have internal vestigial shells.
Snails, top shells, cones, sundials, tiny augers, Florida augers, murex, olives, tulip shells, cowries, periwinkles, and limpets
They clam-up. Clams have two concave shells that they can clamp tightly together, totally encasing themselves in hard limestone. Snails withdraw into their hollow shells and have a little trap-door they can close behind themselves. Limpets have only one concave shell on their backs however they clamp themselves down hard on a rock so their shell covers them completely.
birds and other bigger animals like snails
Limpets eat microscopic plants of the rocks. They use their rough tougue to scrape it off.
Leathery shells = Hard shells
Limpets have very hard conical shells which help protect them from waves crashing into them and also from humans stepping on them! Also, they have a sandpaper-like tongue called a radula to help them scrape algae from the rocks. Limpets clasp tightly to rocks by carving themselves a place called a home scar.This makes it very difficult to remove them from the rock and helps to protect them.
Some examples of clinging shellfish are barnacles, mussels, and limpets. These shellfish attach themselves to rocks, docks, or other hard surfaces using a strong adhesive substance secreted by their bodies.
Limpets live in the intertidal zone and are stuck to the rocks.
Not that hard where your teeth will brakeJust hard
Yes. Penguins are birds, and birds reproduce by laying eggs with hard shells. This is different from the eggs of reptiles and monotremes, which have leathery shells.