The smaller left chela is used for fine motor work such as eating and selecting gastropod shells.

This species often occurs inside large gastropod shells that are inhabited by hermit crabs.

She turned over a gastropod shell in order to get a new view for sketching.

The width of this large gastropod shell is 130-285 mm.

An example would be: a gastropod shell listed as Lucapina aff.

The larvae are planktonic for 3-4 weeks, before settling to the sea floor and entering a gastropod shell.

The shape of the aperture in a gastropod shell can be:

The Psammoactinia colony began with a larva landing on a small gastropod shell.

The mantle of many gastropods is usually fully or partially hidden inside the gastropod shell.

The larva is for some reason drawn to settle on the inner lip of a gastropod shell.