The bay at Tamarin is a feeding ground for dolphins and sometimes humpback whales with babies too. Usually, it's the smaller spinner dolphin in schools of 20-60, but there can be up to several hundreds. If bottle-noses show up, the spinners take off. Local boatmen offer trips where you either just watch from the small motorboat or they drop you with fins and mask close to a school. The dolphins swim slow enough to follow them and the curious ones can get real close (no touching of course). Due to sensible regulation, it’s only permitted to go in the morning. Go as early as possible (preferred 6 am) to escape the crowds, for in high season there can be as many as 50 boats slowly following the dolphins. Some tour operators offer the dolphin swimming as part of a half day trip with island visit to Ile aux Benitiers and some snorkelling.