Rolly poly rolled up

A rolly-poly (Armadillidiidae vulgare) rolled up in self defense.

Rolly poly
They are isapods (Crabs,lobsters,ect.). They are the only isapods that live without needing to spend part of there live submerged in water, but they still need to always be moist since they breath through gills. It is possible for them to live in the water or in the ocean. For more info see Firedragon's recipe for rolly pollies.
Rolly Polly Playing Peek-a-Boo