Batz is an emerald green island off Roscoff, in France's Brittany region. This land of a few square kilometres has 507 permanent residents; islanders who live off either tourism or farming. There are also day visitors, those who stay longer and a few lucky ones who have the privilege of owning a second home there. In summer, some 2,000 tourists arrive every day, a change of pace that the islanders prepare several months in advance. All the island's inhabitants are supplied by a barge, which makes a daily crossing to Roscoff.