Batu Bolong Rinca
Rinca Island · Indonesia
A small rocky islet between Rinca and Komodo that rises from deep water, producing relentless current and one of the highest fish densities in the national park. Every surface of the rock is covered in corals and sponges. Grey reef sharks, giant trevally, and schooling barracuda are almost guaranteed. Experienced drift divers only when current is running full.
Conditions
Depth
5 to 50 m
Advanced depths
Current
Often strong
Can pick up on the edge
Visibility
15 to 30 m
Clearest in the calm season
Water
22 to 29°C
5mm full wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 26 | 26 | 26 | 25 | 23 | 22 | 22 | 22 | 23 | 24 | 25 | 26 |
| Vis (m) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Current | Strong | Strong | Strong | Strong | Strong | Strong | Strong | Strong | Strong | Strong | Moderate | Strong |
Your chances of seeing each animal
Leaf Scorpionfish
Last confirmed Mar 11, 2026 · 25 records
Very likely
Most dives
Bluefin Trevally
Last confirmed Jun 21, 2026 · 26 records
Very likely
Most dives
Giant Trevally
Last confirmed Sep 20, 2025 · 12 records
Very likely
Most dives
Grey Reef Shark
Last confirmed Sep 22, 2024 · 1 records
Likely
About 6 in 10 dives
Barrel Sponge
Last confirmed Mar 13, 2026 · 4 records
Likely
About 6 in 10 dives
Feather Star
Last confirmed Jul 22, 2024 · 1 records
Likely
About 6 in 10 dives
Bumphead Parrotfish
Last confirmed Jun 1, 2026 · 10 records
Likely
About 6 in 10 dives
Manta Ray
Last confirmed Apr 18, 2026 · 2 records
Sometimes
About 1 in 3 dives
Gear