Editing Seashell (section)

==== Mollusks ====
* Carrier shells in the family [[Xenophoridae]] are marine shelled gastropods, fairly large sea snails. Most species of xenophorids cement a series of objects to the rim of their shells as they grow. These objects are sometimes small pebbles or other hard detritus. Very often shells of bivalves or smaller gastropods are used, depending on what is available on the particular [[substrate (biology)|substrate]] where the snail itself lives. It is not clear whether these shell attachments serve as [[camouflage]], or whether they are intended to help prevent the shell sinking into a soft substrate.

[[File:Ocellated octopus.jpg|thumb|left|An ocellated (spotted) octopus using a clamshell as a shelter]]
* Small [[octopus]]es sometimes use an empty shell as a sort of cave to hide in, or hold seashells around themselves as a form of protection like a temporary fortress.