Hans Reef dive site

Gili Air

Hans Reef Diving

Usually mild enough for an Open Water profile; tidal current remains possible. The guide selects the route and profile for the group, tide and surface conditions.

Depth range
12–22 m
Access
Boat
Environment
Sandy slope, Coral pinnacles, Biorock, Macro, and Night dive
Experience level
Beginner to Intermediate

About Hans Reef

Hans Reef is a sandy slope, coral pinnacles, biorock dive in North Gili Air, with a working depth range of approximately 12–22 m. The site is known for frogfish, seahorses, turtles, nudibranchs, and shrimp. Conditions remain variable, so the route, maximum depth and suitability are confirmed by the local guide on the day.

Site highlights

  • Sandy slope, Coral pinnacles, Biorock, Macro, and Night dive profile
  • Usable depth range from approximately 12 to 22 m
  • Potential encounters include frogfish, seahorses, turtles, and nudibranchs
  • Usually mild enough for an Open Water profile; tidal current remains possible

Before you dive

Recommended certification

Open Water or equivalent

Local guide recommended

Explore with a local guide familiar with the site and its entry and exit points.

Diving conditions & best time to visit

Water temperature
27–30 °C
Visibility
10–30 m

Usually mild enough for an Open Water profile; tidal current remains possible

Best months to dive

May–October often provides the clearest conditions, although the reefs are dived throughout the year when daily conditions permit.

Diving is available year-round when wind, swell and current permit. May–October often brings clearer dry-season water; wet-season visibility is more variable. Wildlife encounters are never guaranteed.

Conditions may change

Typical conditions can vary on the day of your dive. Confirm current conditions with the dive team before entering the water.

Marine life & activities

  • Frogfish
  • Seahorses
  • Turtles
  • Nudibranchs
  • Shrimp
  • Reef fish
Night diving

Access & safety

Entry & Exit

Boat dive from one of the three Gili islands

Boat departure point
Local Gili Islands dive-centre beach
Boat travel time
5–20 min

Safety notes

Use low-impact finning over sand, avoid contact with Biorock structures and carry a surface marker when diving from a boat.

Dive tips

  • Follow the local guide’s site- and tide-specific briefing.
  • Agree a maximum depth within certification limits; the published site range is 12–22 m.
  • Maintain neutral buoyancy and avoid contact with coral, artificial structures and the seabed.
  • Use low-impact finning over sand, avoid contact with Biorock structures and carry a surface marker when diving from a boat.
  • Treat wildlife encounters as possible, never guaranteed, and give animals space.

Underwater photography

Use a macro lens, focus light and patient search pattern. Keep fins elevated over sand or rubble, approach subjects slowly and never touch, reposition or crowd marine life. Night photographers should agree light and buddy signals before entry.

Site map & location

Hans Reef dive site planning map

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