General Description: Snow crabs (C. opilio) are brachyuran (meaning short-tailed) or true crab and constitute some of the most highly specialized of all crustaceans. The body is composed mainly of a chitinous shell or carapace with a small abdominal flap. They have five pairs of legs with the first pair equipped with pincers. Males of commercial size usually range from 7 to 11 years of age and vary in weight from 1 to 2 pounds for opilio and 2 to 4 pounds for bairdi crabs. Snow crab are often marketed under the name "snow crab."