Search Results for: Sea crawfish not in shell
a shell, and those with only a very reduced or internal shell, are usually known as slugs; those with a shell into which they can partly but not completely withdraw are termed semi-slugs. the marine shelled species of gastropod include species such as abalone , conches , periwinkles , whelks , and numerous
other sea snails that produce seashells that are coiled in the adult stage—though in some, the coiling may not be very visible, for example in cowries . in a number of families of species, such as all the various limpets , the shell is coiled only in the larval stage, and is a simple conical structure...
https://en.wikipedia.org/wiki/Gastropoda