List of endangered molluscs
In September 2016, the International Union for Conservation of Nature (IUCN) listed 507 endangered mollusc species. Of all evaluated mollusc species, 7.0% are listed as endangered. The IUCN also lists nine mollusc subspecies as endangered. No subpopulations of molluscs have been evaluated by the IUCN. For a species to be considered endangered by the IUCN it must meet certain quantitative criteria which are designed to classify taxa facing "a very high risk of extinction".