Charisma compacta

Charisma compacta is a species of extremely small sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

The four whorls are rather loosely coiled and separated by channelled sutures.

The body whorl is sculptured with about twenty regularly spaced, sharp, spiral grooves.

The umbilicus measures about one-eighth of the shell's diameter; its margin is smooth and rounded.

[2] This marine species is endemic to Australia and occurs off New South Wales.