When I was in the Bahamas I ate the tittle of a conch shell, they said it was an aphrodisiac (SP?) but it was nasty and slimey! But I did it and we got to keep what we found on the island for taking the challenge. Anyone else? Monkey brains???
Actually, calamari is squid. My whole family loves sushi, and that is where I've had octopus. Close to your entry is uni, which is sea urchin. I've never been brave enough for that one, only traditional Japanese seem to like it.
Tounge is very good if prepared right. It has to be sliced thin.