M-840 MOON SNAIL, Polinices duplicatus
It has a smooth rounded shell and a greatly expanded foot. It plows a furrow in the sand and engulfs bivalves, which it then drills.
These predatory snails consume other mollusks and are sometimes cannibalistic. They drill a circular hole in the shell of their prey with hydrochloric acid and other enzymes through an accessory boring organ.
They sexually reproduce. Female moon snails lay their eggs in a collar-shaped egg case. These collars are made from sand grains adhering to the snail’s mucus.