Dungeness crab season is about to begin. Fishermen are stacking their pots and preparing boats for the season that usually starts in December. But this year, domoic acid levels found in some catch may prove to be a problem. The naturally occurring acid can concentrate in fish and shellfish, and is capable of causing sickness in animals that eat them. Hugh Link is the Executive Director of the Oregon Dungeness crab Commission. He says they test for domoic acid annually, but this year cases are elevated due to a large algae bloom off the west coast.