Hermit crab (Far Harbor)

Hermit crab is a creature found in the Fallout 4 add-on, Far Harbor.

Biology
The Far Harbor hermit crab still resembles its unmutated pre-War ancestor quite closely both in appearance and in its habits, with only one major difference: its immense size. Towering head and shoulders over any human, hermit crabs are far too large to protect their vulnerable abdomen by squeezing it into an empty gastropod shell. Instead they use wrecked vehicles like vans or truck trailers to facilitate their ambush hunting style.

Gameplay attributes
Hermit crabs are giant creatures on par with fog crawlers, mirelurk queens and super mutant behemoths, though not quite as tall as the latter. As rare as they are powerful, the crabs are only ever encountered alone in a select few locations on Far Harbor Island where they masquerade as a random vehicle wreck choked with mud and debris. Should something or someone venture close enough, the hermit crab will reveal itself and attack with its massive claws. The process of extracting itself from its shell takes quite some time and should usually suffice to put some distance between the Sole Survivor and the crab, provided the creature did not get the jump on its prey.

Needless to say for a beast this size, hermit crabs are heavy hitters and can inflict immense damage with their claws. Fortunately they are quite slow and not exactly agile. They also can neither fit through doors nor mount obstacles.

Appearances
Hermit crabs appear only in Fallout 4.