All acteonoids have a shell that resembles that of many prosobranchs.
Some of the members are able to withdraw completely into the shell and to close the shell with an operculum, e.g. Acteon tornatilis.
All acteonoids have a shell that resembles that of many prosobranchs. Some of the members are able to withdraw completely into the shell and to close the shell with an operculum, e.g. Acteon tornatilis.
Acteonoidea