

Best for beginner divers, 15-20m, boat entry.
Alternative Reef in Tunku Abdul Rahman Marine Park is a marine site reaching depths of 15 to 20 metres. Access is strictly by boat, which is required to avoid surf and shore break. The site features moderate currents and visibility ranging from 10 to 30 metres. Divers should be cautious of sharp coral and occasional jellyfish. Species recorded around this area include wrasses, Moorish idols, and various invertebrates such as nudibranchs and crustaceans. The site is suitable for beginners, with an average dive time of 50 minutes. Facilities including equipment rental, air fills, and rinse stations are available for visiting divers.
6.72227, 116.34875
Boat entry is the only way in, so confirm your departure time with your operator the evening before to avoid missing the best visibility window in the morning. Wear a thin wetsuit or dive skin even in the warm 27 to 30 degree Celsius water, as jellyfish are an occasional hazard at this site.
Access info coming soon
Recorded nearby, within 20km
Depth
15-20m
Visibility
10-30m
Skill Level
Beginner
Entry
Boat
Boat required
Water Temp
27-30°C
Current
None
Typical Dive
50 min
Species recorded around this area include wrasses, Moorish idols, Pacific Bullethead Parrotfish, and various invertebrates like the Peacock Mantis Shrimp and Chromodoris nudibranch.
Yes, the site is suitable for beginner divers, though they should be prepared for moderate currents.
The depth at Alternative Reef ranges from 15 to 20 metres, with an average depth of 18 metres.
This is a boat-only dive site; a boat is required for entry to avoid dangerous surf and shore break near the coast.
The site is primarily designated for diving at depths of 15 to 20 metres.
Diving at Alternative Reef in Mantanani Island requires the following certifications: Open Water. Always dive within your training limits.
Yes, equipment rental is available at or near Alternative Reef in Mantanani Island. Contact local dive operators for specific gear availability and prices.
A rashguard or 2mm shorty is recommended for diving at Alternative Reef in Mantanani Island. Water temperatures range from 27°C to 30°C.
Divers at Alternative Reef in Mantanani Island should be aware of jellyfish. These encounters are generally rare and avoidable with proper awareness. Follow local safety guidance and maintain a respectful distance from all marine life.
Visibility at Alternative Reef in Mantanani Island typically ranges from 10 metres to 30 metres. Conditions vary with weather, tides, and seasons.