Prawn is type of crustaceans with an exoskeleton and ten legs, some of which can be eaten. It tasted sweet. You can raw, and frozen as well as fresh. They may be sold in the shell, or peeled prawn meat. If you work on the un peel to peeled prawn meats 1kg shelled prawns is about 24 medium to large prawns or 500g of peeled prawn meat.