A mollusk is a sea creature that lives within a shell. A cobra does not live in a shell.
THey use a shell
the function of the its shell is to protect the mollusk's very vulnerable and sensitive organs.
Every mollusk except slugs, which have evolved to not need a shell, has a shell. Snails, clams and other bivalves have an external shell. Octopi, squid and cuttlefish have an internal shell.
no
yes
slug
jellyfish
A shell
No, a seahorse is not a mollusk. Seahorses belong to the animal group called fish, specifically within the family Syngnathidae. Mollusks, on the other hand, are a separate group of invertebrates that include creatures like snails, clams, and octopuses.
It is a shell, as in a cockle shell or oyster shell.
no..... slugs are mollusks and they don't have a shell