Snorkeling and diving are the main focus on Gili Air. For surfers, one right-hand break is mostly frequented by locals rather than tourists who prefer the better known breaks at Trawangan. The break is located on the southwest coast.
The best place to enjoy snorkeling on Gili Air is to start on the east coast at the top of the island and drift down with the currents. If you haven't brought your own gear you can hire it from plenty of beach bars and hotels. Expect to pay about Rp20,000 for mask and fins per day. If you would prefer to explore further off shore, hire a glass-bottom boat. Owners offer a day rate rather than charging by the hour so make the most of it and spend a day cruising round all three islands stopping for a well-deserved lunch before heading back at sunset. Expect to pay about Rp50,000 per person (four-person minimum) from Ozzy's Shop (tel. 0370/622179; daily 8am-8pm).
For diving, three established groups operating on the island are Blue Marlin Dive (tel. 0370/634387; www.bluemarlindive.com), Dream Divers (tel. 0370/634547; www.dreamdivers.com), and Manta Dive (tel. 08/1337789047; www.manta-dive.com). All have their headquarters on Gili Trawangan. Costs are fixed across all islands so there is no haggling. You can, however, save slightly by booking online.
Cycling on Gili Air is not for those looking for a leisurely spin round the island. There are lots of areas where you will need to dismount and push. This is best done early evening or first thing in the morning when it's slightly cooler. Expect to take about an hour to an hour and a half to circumnavigate the island. A day's hire from Ozzy's Shop will cost Rp30,000.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.