I would just add that there is also residual biomass when the survey is conducted after the fishery. We assess the crab that is not being caught in the fishery, as David Bevan just mentioned. That crab is not lost, by the way. Managing a resource is about sex and kids. You need some crab to have sex to have kids. You need to leave some animals on the bottom to reproduce. It's important that these crabs be there, so they're not lost animals.
On June 7th, 2010. See this statement in context.