divin4fun,
Harvesting crab is one of my favorite underwater activities.
Last year, during the navigation segment of my AOW course, my bearing took me directly over a Dungie with at least an 8" back, HUGE! I reflexively dove toward the crab, and then caught myself. It was out of season anyway, but my response was primal.
I live in Edmonds, but I'll go anywhere for good crabbing.
The best crabbing I've found is around Orcas Island. There may not be as much harvesting pressure there, and the crab tend to be larger and heavier shelled.
I've found abundant crab nearby, but I'm concerned about toxins they may have absorbed, as our area is historically industrial. Worst case, if I eat too much, my mercury levels will make me useful as a human thermometer...
Here's a tip: When diving a sandy bottom, look for oval-shaped indentions in the sand, as though someone just buried a pie plate. Dungies often hide under a thin layer, but pop out quickly when prodded or otherwise alarmed. Be ready with your measuring tool and bag! Regulations forbid your taking undersized crab out of the water. Harvesting is most efficient when one person is catching, the other bagging.
I've found scores of crab bedded very densely in some areas... one crab pops up, then another, and then it's like, "Night of the Living Dead", with dozens popping up from the sand all around you. At this point, you and your dive buddy can actually herd the crab from above, with the bagger driving them toward the hunter.
What a hoot!
Steve