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.
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.
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.
Leathery shells = Hard shells
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.
to protect them
Bees have exoskeletons, not shells. For its size, the bee's exoskeleton is very hard, but a human could easily crush it, so, in that sense, it is not very hard.
no