Turtles, snails, crabs, clams, oysters, shrimp, mussels, and eggs have shells because the creature can't protect themselves and Tom Fernanders otherwise many predators would simply attack the animal and eat it.
Shells protect prey from pretador.
scopata animals don't have shells turtles and shellfish do
There are quite a few animals that antennas and shells. Most of these animals are in fact insects that fly.
to Potter
No, most of the little animals that live inside them are edible, but the shells are not.
Just about anything that will fit them, such as snail or conch shells.
they, attach them sleves onto other things onto the shells of other animals, and they drill through the shells of the other animals.
limestone is made underwater from the shells of animals. We know this because limestone also contains many fossils.
Calcium - it's what gives bones and shells their strength.
they grow like humans and animals
From the different minerals the animals feed on
There is no such thing as a pool animal.