Batu Bolong
Komodo National Park · Indonesia
A single rocky pinnacle in the middle of Komodo's central straits. Currents split around it, leaving one side calm enough to drift the wall while the other rips overhead at three knots. Nutrient flow keeps the reef carpeted in soft coral and stacked with reef fish from 5 m to 40 m+.
Conditions
Depth
5 to 40 m
Advanced depths
Current
Often strong
Can pick up on the edge
Visibility
20 to 30 m
Clearest in the calm season
Water
23 to 29°C
5mm full
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 27 | 27 | 27 | 27 | 26 | 24 | 23 | 23 | 24 | 25 | 26 | 27 |
| Vis (m) | 10 | 10 | 15 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 15 | 10 |
| Current | Strong | Strong | Moderate | Moderate | Strong | Strong | Strong | Strong | Strong | Moderate | Moderate | Strong |
Your chances of seeing each animal
Reef manta ray
Last confirmed Jun 20, 2026 · 77 records
Almost always
Nearly every dive
Hawksbill turtle
Last confirmed Jun 21, 2026 · 76 records
Almost always
Nearly every dive
White-tip reef shark
Last confirmed Jun 21, 2026 · 37 records
Very likely
Most dives
Napoleon wrasse
Last confirmed Jun 29, 2026 · 34 records
Very likely
Most dives
Giant trevally
Last confirmed May 15, 2026 · 65 records
Very likely
Most dives
Gear
Basic kit
For this site
- Reef hook with lanyard · Current can pin you to the wall — hooking onto dead reef saves air and posture.↗
- Heavier wetsuit (mid-year) · Southern Komodo upwellings drop the water temperature sharply in June–September. Layer up.↗
- SMB + reel · Drift exits put you in shipping channels. SMB up before ascent is non-negotiable.↗
- Dive computer · Deep, current-rich dives — accurate NDL tracking matters.↗