Dive-site story
Navy Island sits near the entrance of Trincomalee's natural harbor, offering sheltered shallow reef diving characterized by granite boulder formations and patchy hard coral growth. The seabed transitions from rocky outcrops to sandy slopes where bottom-dwellers hunt and shelter. Because of its protected position against heavy ocean swells, it serves as a dependable site when outer exposed reefs encounter stronger surge.
Submerged granite boulders overgrown with hard corals and sponges
Sheltered conditions suitable for calm exploration and training
Active macro critters hiding in crevices between rock rubble
Location
Use the map to plan with your operator and confirm the exact entry point on the day.
Seasonality
The eastern monsoon affects the area from November to March, making the dry southwest monsoon months ideal for diving around Trincomalee.
Marine life
| Species | Likelihood | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clark's AnemonefishAmphiprion clarkii | Common | ||||||||||||
| Emperor AngelfishPomacanthus imperator | Common | ||||||||||||
| Giant MorayGymnothorax javanicus | Common | ||||||||||||
| Green Sea TurtleChelonia mydas | Seasonal | ||||||||||||
| Titan TriggerfishBalistoides viridescens | Common |
Marine forecast
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