WRT Red Tide, this applies mostly to clams and oysters, especially butter clams. Crab aren't as affected, as they aren't filter feeders and as such are once-removed from direct ingestion of the Red Tide boogers (they will eat affected clams, though). If you detach the leg clusters from the crabs BEFORE cooking, you are pretty much 100% safe.

You are also 100% safe on clams and oysters if you go to Westcott Bay and buy from the company there. They keep a VERY close eye on things, since they sell to highbrow restaurants. You can get there by boat or road.

Regards.

Mike
Woodinville