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some animals such as clams have hard shells to protect them. sometimes if a predator sees a sheel it will either think it's a rock, but even if they dont think its a rock they will struggle to get the clam out of the shell even though some animals are able to.

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Q: Why do some animals such as clams have hard shells?
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Are mollusks soft bodied?

Mollusks are soft bodied animals that can have no shells,1 shell or even 2 shells. Snails, clams, sea slugs, clams, scallops, oysters, octopuses, and squid, are some types of Mollusks.


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There are many animals that do indeed have a hard shell, but it depends upon your definition of a shell. In the group of animals called arthropods some possess an exoskeleton (the skeleton on the outside of their body as sort of a protective shell) which would include grasshoppers and cockroaches. Crabs, shrimp, crayfish, and lobsters, are also arthropods and their hard shells are also an exoskeletons. In the group termed mollusks we also see animals with true hard shells, included in this category are snails, clams, scallops, oysters, tusk shells, chitons, nautilus, to name a few. Shelled animals everyone is familiar with is in the reptiles and that is the turtles and tortoises. As far as mammals the only animals which would have what some consider a protective shell (or armor) would be an armadillo.


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