Neolithodes grimaldii

Porcupine crab
Illustration from Ray Lankester's A Treatise on Zoology above, museum specimen below (living are red)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Anomura
Family: Lithodidae
Genus: Neolithodes
Species:
N. grimaldii
Binomial name
Neolithodes grimaldii
Synonyms

Neolithodes grimaldii, the porcupine crab, is a species of king crab. It is found in cold, deep waters in the North Atlantic, often caught as bycatch in fisheries for Greenland halibut (Reinhardtius hippoglossoides). As suggested by its common name, the carapace and legs are covered in long spines.