Mythological molluscs

Greek deity

Icelandic lake monster cryptid

is a gigantic octopus-like monster from Ainu folklore, similar to the Nordic kraken, which supposedly lurks in Uchiura Bay in Hokkaido.

thumb|180px|right|The Sazae-oni as illustrated by Toriyama Sekien are creatures from Japanese mythology, resembling large mollusks. They are a type of obake that forms when turban snails, especially Turbo sazae, reach 30 years of age.

creature from Chinese mythology

Mythical beast in French folklore