With its impressive beaches and coral reefs, snorkeling and diving are the highlight in Gili Air.
There are few quality scuba diving operations on all the island, who will arrange any diving trip for you. Best place to visit is Hahn’s Reef, where strange critters and muck diving are the norm, it is also a superb training site for beginners.
The other great spot for diving and snorkeling is Gili Air Wall where you can see anything from turtles to pygmy sea horses, quite amazing!
Gili Air is the nearest Gili to Lombok. It is also the most populated and you will find more trees there than in the other Gili's.
It has the largest local population and while it has more of a lived-in feeling than the other two islands for some that is quite possibly its attraction. The local inhabitants are: Sasak, Mandar, Bugis and Makassar. You can find their unique culture that is different from Lombok. Many of the older generation still make their living as boatmen, fisherman and farming coconuts. On Gili Air it's possible to likewise enjoy the marine possibilities but also one can absorb some of the local culture missing on the other islands.
There are only a few number of luxury upmarket hotels (rooms with air conditioning, swimming pool, TV etc) on Gili Air. Most of places to stay are located in south, west and east side of the island. The island remains quiet and relaxing making it popular with honeymoon couples and travelers seeking a quiet retreat.
Snorkeling and diving are the highlight of the activities. Snorkeling area are located in the south east (opposite-facing the Lombok Golf Kosaido) and along to the north east). You can just jump into the water to see the colorful fishes and coral reef. In the western part of Gili Air when the moon is high (low tide), you can't swim off the beach. You need to walk to the south or east side.