You know, I'm not sure. It would depend on how cold your freezer stays. Do they smell fishy? Maybe defrost and smell one. They won't taste the same as fresh, but I've used frozen shrimp, fish, and smoked salmon from frozen after a year, and they've been fine.
Are they still in the shell?
Maybe cook in beer or wine.
BTW, welcome to DC!
She who dies with the most toys, wins.