The ocean around the Gili Islands drops off to over 1200 meters and is swept by tidal currents keeping water clear and clean. We have also enjoyed a protected status from fishing for many years and the less visited deeper areas are pristine, providing tremendous topography and a variety of fascinating marine life such as oceanic sun fish (mola mola), sharks, rays, turtles and a variety of other pelagic.
The diving is predominantly drift diving, although some sites have windows of several hours without current. Most sites are walls and reefs, and if you like wreck diving we have a totally intact WWII Japanese Submarine Chaser resting upright at 45 meters. Deep walls range from 40 meters to over 150 meters. A great number of these deeper walls and reefs give relatively easy access to shallow water for decompression, others drifting open water decompression is normal.
Our diving is customized to your needs and interests, and will follow the general guidelines listed under our Technical Diving page. All our boats are equipped with surface oxygen, additional decompression gases and mobile phones. There will be no large mixed ability groups. Divers will be given the opportunity to enjoy their diving and develop at a level which is comfortable for them.
Best time to dive is all year, March to October is very reliable weather, and very warm both in and out of the water. We always have some sites sheltered from prevailing seasonal weather conditions and typically lose only three or four days diving a year due to rough conditions. This makes anytime of year good for diving. Water temperatures range from about 25° Celsius (72°F) in January and February to 30° Celsius (86°F) from March through October.
Trawangan Dive staff reserve final judgment on suitability and choice of the dive site and will help you to plan your dives using computer programs.
Daily Technical Dive Trip Prices
| Diving Activity | Price | Gas Cost | Equipment |
| Guided Nitrox Dive | $45 | Included | Included |
| Package of 10 Guided Nitrox Dives | $405 per 10 dives | Included | Included |
| Guided Trimix Dive (Hypoxic) | $65 | • Excluded • Customer must pay guide's gas | $25 |
| Guided Technical Dive (Open Circuit or CCR) • 0-55m • 55-80m • 80-100m • 100-110m • 110-120m • 120-130m | $65 $65 $80 $100 $120 $150 | • 0-55m dives twin tank fill included | • $25 |
| Guided Recreational Rebreather Dive | $45 | • Gas Included • Sofnolime $9.40 per kilogram | Buddy Evolution Rebreather rental $50 |
All Dives include Boat Charter, Dive Partner / Guide, Tanks, Weights | |||