Mutant mantis shrimp

Mutant mantis shrimp were to be creatures found in Interplay's Fallout Online - also known as Project V13.

Background
The origin of these creatures is unknown but they have been able to survive the conditions left behind by the Great War.

Far larger than their pre-War counterparts, they are able to survive in waterlogged, cavernous openings on the coast. The creatures are capable of throwing devastating punches at a sonic speed, enough to split hardened power armor.

Locations
Four mutant mantis shrimp were encountered by a Guardian Brotherhood squad on a shattered rock beach somewhere in the vicinity of the Glow.

Appearances
Several mutant mantis shrimp appears in the short story "On the Beach," published in The Armageddon Rag, Vol. 3 and were also going to appear in Fallout Online.