Keratosis is the term for any condition that is a benign overgrowth  and thickening of the epidermis.
Opilio Crab. Chionoecetes, the proper name of the Opilio Crab is a genus of crab that lives in the colder waters of the northern Pacific and Atlantic Oceans. The Opilio Crab is very spider like in appearance and has four pairs of legs that are quite spindly looking.hionoecetes, the proper name of the Opilio Crab is a genus of crab that lives in the colder waters of the northern Pacific and Atlantic Oceans. The Opilio Crab is very spider like in appearance and has four pairs of legs that are quite spindly looking.
The Bairdi crab is also known as tanner crab or Chionoecetes Bairdi; Opilio crabs are also known as Chionoecetes Opilio or Snow crabs. 1  The Bairdi crab is found in the Bering Sea; Opilio crab is found in the Bering Sea, in the northwest Atlantic Ocean as well as in the North Pacific Ocean.