Torture Device or Snail Shell?

This snail species, Priotrochatella stellata, looks like something out of the movie Saw. Jigsaw would definitely employ these in some messed up survive-or-die-a-painful-death challenge.

In reality, though, these guys are actually fighting for their own survival. They are critically endangered due to he exploitation of marble quarries, which is where these snails prefer to hang, and because of the fact that they only inhabit a very small range and habitat.

A beautiful, if not deadly-looking, creature.