
Koh Usen
Koh Lipe · Thailand
A small uninhabited island 3 km southwest of Lipe with a submerged ridge running off its northern tip into open water. The ridge top at 12 m has some of the best tabletop acropora in the park; beyond it the bottom slopes to 30 m and terminates in a sandy plain used as a resting area by green and hawksbill turtles. Bumphead parrotfish visit in aggregations of up to 30 individuals during the early morning flood tide between November and February.
Conditions
Depth
5 to 30 m
Open water and up
Current
Often strong
Can pick up on the edge
Visibility
4 to 10 m
Clearest in the calm season
Water
26 to 30°C
3mm wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 |
| Vis (m) | 18 | 18 | 15 | 12 | 5 | 4 | 4 | 4 | 5 | 8 | 15 | 18 |
| Current | Moderate | Moderate | Moderate | Moderate | Strong | Strong | Strong | Strong | Strong | Moderate | Moderate | Moderate |
Your chances of seeing each animal
Bluefin Trevally
Last confirmed Dec 12, 2025 · 1 records
Likely
About 6 in 10 dives
Green Sea Turtle
Expected
Known here, not yet in recent logs
Hawksbill Sea Turtle
Expected
Known here, not yet in recent logs
Yellowlip Moray Eel
Expected
Known here, not yet in recent logs
Red Lionfish
Expected
Known here, not yet in recent logs
Tabletop Acropora Coral
Expected
Known here, not yet in recent logs
Giant Clam
Expected
Known here, not yet in recent logs
Bumphead Parrotfish
Expected
Known here, not yet in recent logs
Gear