Mirabilistrombus listeri

Mirabilistrombus listeri, common name the Lister's snail, is a species of sea snail, a marine gastropod mollusk en in the family Strombidae, the true snail.

Description
The shell size varies between 90 mm and 160 mm. When the animal is mature, the body whorl takes up over 50% of the shell's height. The pronounced projection at the end of the apertural lip is characteristic of the species (Dance, 2002).

Distribution
This species is distributed in the Northwest Indian Ocean and the Andaman Sea. It is a deep-water species. Formerly very uncommon, its population has been increasing in recent years (Dance, 2002).