I work as a fisheries biologist in Alaska with shellfish (crab). I am lucky enough to be able to work with and also eat fresh King Crab in the winters. I must share some more accurate information though. On average a red king crab (which is mostly what they sell in the market) weighs 6 to 7 pounds. Only the HUGE ones can way up to 10 pounds, but they are few and far between. Also, this weight is BEFORE the legs are separated from the body. A cluster (one side of the legs when it is still joined at the knuckles) weighs about 2 to 2 and a half pounds. Red kind crab is fairly abundant in the Bering Sea. Only the Blue and Golden King crab are rapidly dwindling and may not be fished on a yearly basis due to population estimates made by the State. ALL commercial, and sport fish for that matter, fishing is very rigidly controlled in Alaska. Basically, if someone is fishing it, the state has rigid quotas for that fisheries. The quotas come from a combination of research fisheries that are done on a yearly basis before the commercial season begins, and reported numbers from the previous year. Also, for the Alaska crab fishery, a biologist MUST be present on 20% of the fishing fleet 100% of the time during all fishing efforts. The biologists job is meant to help track where the crab are coming from and bi-catch information. We take our fisheries seriously and want to maintain this resource for our future generations.