Had a crab wholesaler tell me today most of the big crab houses dump 100 bushels a week in landfills or in their dumpster! That seems like a lot but I'm sure there is a ton of waste in the crab houses.
It happens more that you think. . Some places that have a reputation for large , expensive crabs , would rather throw away small, light crabs than serve them.The average death rate on crabs can be between between 10- 20 %, especially for crabs shipped in from the south.