If you enjoy keeping tropical fish, the Mantis shrimp is one creature you may not want to keep in your aquarium. While this creature is related to common shrimp, it has a very unusual and specialized feature.

Ref: http//www.USA Today.com. 1/9/06, April Holladay, "Shrimp spring into shattering action”  Image:  Mantis Shrimp_PD