Surf Restaurant - Portsmouth, NH (or Nashua)
Been to the one in Nashua, but a long time ago. It was excellent. It's owned by the Buckley restaurant group, they also own MT's (Michael Timothy's) Local and Buckley's Steaks so they have a really great reputation around Nashua. I think it's great that they have opened their seafood restaurant closer to the coast. I think it's well worth it for you to try, don't think you'll be disappointed (though having recently opened, it may be worth waiting for a couple of weeks).