Charisma simplex is a species of extremely small sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. Description The height of the shell is 1 mm. Distribution This marine species is endemic to Australia and occurs off New South Wales. References Laseron, C. 1954. Revision of the Liotiidae of New South Wales. The Australian Zoologist 12(1): 1-25, figs 1-49a Iredale, T. & McMichael, D.F. 1962. A reference list of the marine Mollusca of New South Wales. Memoirs of the Australian Museum 11: 1-109 Wilson, B. 1993. Australian Marine Shells. Prosobranch Gastropods. Kallaroo, Western Australia : Odyssey Publishing Vol. 1 408 pp. External links To World Register of Marine Species simplex Gastropods of Australia Gastropods described in 1954