It is a small but one of the most aggressive predators. Sometimes it is called pissing shrimp.

Why Mantis Shrimps Not Sharks Might Be The Most Amazing

Mantis Shrimp Wikipedia

Marine Species Mantis Shrimp Scuba Diver Life

Mantis Shrimp Claws

Mantis Shrimp Order Stomatopoda Part Ii Care In Captivity