[2] It is found in tropical to warm temperate parts of the Indo-Pacific and Atlantic Oceans, where it feeds on sponges.

This shell is a flattish cone and is usually encrusted with epiphytic organisms, both plant and animal.

The mollusc does not elongate when crawling and the location of the head is revealed when it thrusts out its rolled rhinophores from beneath the shell.

[3][4] The sole of the foot is smooth and flat; the gills are bipinnate and are located in the right side of the body.

In 2016, researchers reported that it had been observed for the first time in the Bay of Biscay in surveys undertaken between 2011 and 2014, in what seemed to be a northward shift in its range; this "tropicalisation" was attributed to a rise in sea temperature.