Portugal has been fishing and trading cod since the 15th century, and this cod trade accounts for its widespread use in the cuisine. Other popular seafoods includes fresh sardines (especially as "sardinhas assadas"), sea bass, snapper, swordfish, mackerel, sole, brill, halibut, John Dory, octopus, squid, cuttlefish, crabs, shrimp and prawns, lobster, spiny lobster, and many other crustaceans, such as barnacles, hake, horse mackerel (scad), scabbard (especially in Madeira), and a great variety of other fish and shellfish, as well as molluscs, such as clams, mussels, oysters, scallops and periwinkles.