Swallows Cave Vavau
Vava'u, Tonga · Tonga
An enormous sea cave accessible from the boat at surface level, with sunbeams cutting through the entrance into a cathedral interior where thousands of small fish school in the filtered light. The sheer scale of the space — 30 metres wide at the mouth — makes it an extraordinary ambient-light photography subject and an unforgettable dive even without seeking out depth.
Conditions
Depth
2 to 20 m
Open water and up
Current
Usually gentle
Can pick up on the edge
Visibility
20 to 30 m
Clearest in the calm season
Water
22 to 29°C
3mm wetsuit
Your chances of seeing each animal
Bigeye trevallyLeast concern
Sometimes
About 1 in 3 dives
Blacktip reef sharkVulnerable
Sometimes
About 1 in 3 dives
Humpback whaleLeast concern
Rare
Now and then
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