Larry is right. All crab is cooked prior to freezing. In fact, they are killed, cleaned and tossed into giant boiling vats within seconds of being killed. Then they are frozen. They are no good otherwise.
Of course they are best if killed and instantly tossed into a big pot of boiling seawater without ever seeing a freezer. If you've got frozen crab, you can either steam or boil as all you really doing is re-heating them.
Crab are in season now. I just heard an ad on the radio today -- live king crab at $10.99 a pound. Think I'm going to be boiling up some over the weekend.
Friends don't let friends eat farmed fish.
"People sleep peacefully in their beds at night only because rough men stand ready to visit violence on those who would do them harm."