There are more than 15 dive sites around the Gilis (Gili Trawangan, Gili Air, and Gili Meno) and more reefs are being explored all of the time. Most sites are suitable for beginners, but there are some that are more challenging for advanced divers. Some of the dive sites are shore dives; others have to be reached by boat. Snorkeling is also good around the three islands.

The Vila Ombak Diving Academy is the only Dive Centre in Indonesia to receive an award for "Outstanding Commitment for the PADI system of education". It is a fully accredited 5 Star Dive Centre and Gold Palm Resort. Situated at Hotel Vila Ombak it has created the premier marine tourism destination in the Gili Islands. The management team has been operating since 1991 and has a 100 % safety record.

They cater to all levels of diving ability from complete beginner with the PADI Discover Scuba Diving Program to Assistant Instructor for the budding scuba professional. They teach and have all PADI materials in a wide range of languages, too. For the experienced diver they dive up to 4 times per day including fantastic night diving. Their experienced PADI dive-masters will guide divers around all Gili Islands spotting marine life such as cuttlefish, octopus, blue ribbon eel, unusual leaf scorpion-fish and tons of turtles! They specialize in small groups and tailor diving to suit the diver's interests.

Just for information, concerns about conserving The Gili Islands dive sites have led to the creation of the Gili Eco Trust. All dive centers in Gili islands have a fixed price agreement and have agreed to charge a ‘one time’ US$3 'reef tax' to every diver. This money then used to pay for beach cleaning, recycling and conservation of the reefs