
Shark Ledge
Osezaki · Japan
A series of broad sand and rubble ledges between 20 and 30 metres where whitetip reef sharks gather to rest during daylight hours, often lying motionless in groups of three to six individuals beneath overhangs. The sharks are habituated to divers and allow close approach, making this one of the most reliable shark encounters in Japan. The surrounding reef is characterised by large boulder formations with crevices hosting lionfish, scorpionfish, and juvenile moray eels. At dusk the sharks become active and hunt the reef alongside banded sea kraits.
Conditions
Depth
18 to 32 m
Advanced depths
Current
Can be moderate
Can pick up on the edge
Visibility
8 to 14 m
Clearest in the calm season
Water
13 to 27°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 14 | 13 | 14 | 16 | 18 | 20 | 22 | 24 | 23 | 20 | 17 | 15 |
| Vis (m) | 10 | 10 | 12 | 12 | 10 | 8 | 8 | 6 | 8 | 10 | 10 | 10 |
| Current | Gentle | Gentle | Gentle | Moderate | Moderate | Moderate | Moderate | Gentle | Moderate | Moderate | Gentle | Gentle |
Your chances of seeing each animal
Red Lionfish
Last confirmed Jul 5, 2026 · 1 records
Likely
About 6 in 10 dives
Whitetip Reef Shark
Expected
Known here, not yet in recent logs
Devil Scorpionfish
Expected
Known here, not yet in recent logs
Giant Moray Eel
Expected
Known here, not yet in recent logs
Blue-spotted Grouper
Expected
Known here, not yet in recent logs
Feather Star
Expected
Known here, not yet in recent logs
Banded Sea Krait
Expected
Known here, not yet in recent logs
Yellowtail Fusilier
Expected
Known here, not yet in recent logs
Gear