At a glance
Best Time to Dive
November to April
Water Temperature
27-29°C / 81-84°F
Visibility
22-30m / 72-100ft
Access Type
Boat
Dive Type
Scuba
Difficulty
Advanced
Max Depth
30 m
Average depth
22 m
Nearest airport
ROR
Beneath the surface
Siaes Tunnel is a massive underwater cavern that offers a unique deep diving experience in Palau. Divers descend to 30 meters to enter the tunnel, which is decorated with sea fans, and can see sharks and rays silhouetted against the bright blue exit.
Deep cavernSwim-throughSharks
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