Exploring Hans Reef

Hans Reef is the perfect site on which to practice your freediving skills during the course. 

Located on the North-East corner of Gili Air, this area is renowned for it’s turtles, plus a vast array of different sea-life to be found along the way.

Situated on a sandy slope, we have a variety of depth options, all of which have their own special features.


Towards the bottom of the slope is the main focal point of Hans Reef…the ‘Brainiac’. A large rock formation with a lot of coral growth and many holes and crevices where we can find Morray Eels, octopus, and lion fish. Surrounding the bommie we see many schooling fish such as squirrel fish, fusiliers, surgeon fish, squid, and more. Also, on the top of the Brainiac is a hole where turtles occasionally go for a little sleep.

Adjacent to the Brainiac is a sandy plateau with a scattering of coral bommies, often we will see 3 or 4 turtles sitting on the plateau, a favourite spot for them to take a rest.

Also, in the blue, we see the turtles surfacing for a breath of air…

Freedive Blue Marine_Student_Hans Reef


West of the Brainiac & Plateau we shallow up to find large patches of coral, with a few smaller rock formations, separated by a sandy bottom. If you’re lucky you will find the very well camouflaged scorpion fish, more turtles, long-horned cowfish, and puffer fish.

The list of sea-life here is pretty endless, but here are the main things to look out for:

Turtles! Turtles! Turtles!
Morray Eel
Blue Spotted Sting Ray
Lion Fish
Sergeant Fish
Parrot Fish
Moorish Idol
Trigger Fish
Blue Sea Star
Puffer Fish
Scorpion Fish
Cuttle Fish
Mantis Shrimp
& lots more!!!

Conditions are fab in the Gili Islands. Most of the year round we have visibility reaching 20 meters, sometimes more. In rainy season (January - March) visibility can be reduced, but usually not drastically. The average water temperature is 28-30 degrees Celsius. Due to the currents that are often present in the waters around the Gili Islands, we drift where the currents take us. This then allows us more energy to explore…it’s a free ride!


The Rules of Freediving
• Never Freedive alone. 
• Do not hyperventilate. 
• Leave 12 hours between free diving and scuba (and vice-versa). 
• Be aware of the boat traffic around (ideally take a buoy).
• Do not push your limits - listen to your body.

Respect the ocean…
When free diving do not touch any of the corals or any of the sea life. It can endanger you, and it can harm the creatures/ corals. Be aware of your fins, and do not stand on the corals.

Freedive Blue Marine, Gili AIr Freediving Centre...
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