Tropes pertaining to mollusks, mollusk-themed characters, and things often associated with mollusks. Seashell examples also go here, since those are often shells of a mollusk.
There are three different taxonomic groups: gastropods (snails and slugs), bivalves (clams, oysters, mussels, scallops, etc.), and cephalopods (squids and octopuses).
Sub-index of Aquatic Animal Tropes and Invertebrate Index and super-index to Cephalopod Index. See also Shell Tropes, for shelled animals in general.
- Artistic License – Marine Biology
Inaccurate and badly researched portrayals of mollusks.
- Clamshell Currency
Seashells as money.
- Clamshells as Mouths
Clams and other bivalves being depicted with the shells as jaws for speaking and eating.
- Clam Trap
Giant clams that snap closed on people who approach them, like living Bear Traps.
- Perplexing Pearl Production
Pearls that are created quickly and without flaws, and by any sort of bivalve.
- Removable Shell
Examples where mollusks are able to shuck off their shell and put it back on at whim.
- Seashell Bra
A brassiere made out of seashells.
- Shy Shelled Animal
Expect a snail to retract into its shell at the first sign of danger.
- Speedy Snail
Slow animals, such as snails and slugs, portrayed as fast and agile.
- Studded Shell
A lot of Real Life snails are outfitted with spikes on their shells for defensive purposes. Fictional species might use them offensively.