The shark, Hákarl, is rotten food from Iceland's fish
Rotten shark meat is served as part of a dish of the menu called þorramatur (food menu consists of meat with the bread khanon. Akvavit liquor and butter) to eat at Þorrablót festivals.
A live shark meat is in danger of bringing fresh, because it has consumed the poison from the acid (Uric acid) in the u district and trimethylamine oxide, but through a special formula of food movement from Iceland to make it smell like ammonia ammonia.