The Innocent-Looking But Deadly Assassin Snail

At first glance, the bumblebee-striped snail may seem quite innocuous. Clea Helena is endemic to the freshwater lakes, rivers and reservoirs of Southeast Asia. It grows up to 1.2 inches in length and can be found burrowing around in soft mud or aquarium substrate, waiting under the surface for approaching creatures with its mouth and feeding tube sticking out.

Rather innocent-sounding, yes? Not quite! There's a good reason Clea Helena is better known as the 'assassin snail.'