Jogashima is the largest island in Kanagawa prefecture located at the most south part of Kanagawa on the Miura Peninsula. Jogashima is part of Miura City - its main industry is fish, particularly tuna. The history of the fish market started about 2000 years ago, and well developed in Edo period. Today, the fish markets are still the main industry at Jogashima. The island is a rural getaway near Yokohama and Tokyo and popular with fishermen.