Prawns is a different kind of crustacean that resembles a miniature lobster and has sweet, succulent meat. The French langoustine, Spanish langostino and Caribbeanlobsterette are all prawns, as is the Italian scampi (which shouldn’t be confused with the dish known in the United States as “shrimp scampi”). Freshwater prawns like the Hawaiian blue prawn look like a shrimp-and-lobster love child, with thinner bodies and longer legs than shrimp.