Chionoecetes

Chionoecetes is a genus of cold-water marine crabs in the family Oregoniidae. Its species include snow crab and other commercially important crabs of northern seas.

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Oregoniidae: Oregoniidae is a family of spider crabs in the superfamily Majoidea. This is the family that contains Chionoecetes.
Snow crab: Snow crab is the common name for Chionoecetes opilio, a cold-water crab harvested commercially. It is one of the best-known species in the genus and a major fishery target.
Molting: Molting is the shedding of an arthropod's external skeleton to permit growth. Chionoecetes crabs grow by periodically replacing their rigid shells.
Chionoecetes opilio: Chionoecetes opilio is a cold-water crab known as snow crab or opilio crab. It is the species most commonly associated with the name snow crab.
Decapoda: Decapoda is an order of crustaceans with five pairs of walking legs. Chionoecetes belongs to this order of crabs, lobsters, and shrimp.
Tanner crab: Tanner crab is a common name used for Chionoecetes species, especially C. bairdi and C. opilio. The name appears in North American fisheries for members of this genus.
Crustacean larva: A crustacean larva is an immature life stage that differs in form from the adult. Chionoecetes hatch into planktonic larvae before settling to the seabed.
Chionoecetes bairdi: Chionoecetes bairdi is a large spider crab found in the North Pacific. Its range and fishery distinguish it from the more widespread C. opilio.
Crab: A crab is a decapod crustacean with a broad, usually flattened body and reduced abdomen. The genus belongs to the broad group commonly called crabs.
Bairdi crab: Bairdi crab is Chionoecetes bairdi, a large crab harvested in the North Pacific. It is a commercially valuable relative of snow crab.