Swallows Cave

Best months: Apr–Jul

Protected Area

'Utungake SMA

Why dive here

With 312+ marine species recorded in the area - including barracuda, giant moray eels, humpback whales, sperm whales and whitetip reef sharks - Swallows Cave offers some of Vava'u Group's richest cave diving. Water ranges 25-29°C, warmest January, February, March.

Best timeApr–Jul

WetsuitA 3mm shorty or thin full wetsuit

Marine lifeBarracuda, Giant Moray Eels, Humpback Whales, Sperm Whales and Whitetip Reef Sharks · 312+ species recorded

Water25-29°C · warmest January, February, March

CharacterCave dive · max 3-12m

StandoutExceptional marine biodiversity

Swallows Cave, in Tonga's Vava'u Group, is one of those places that just makes you grin. We’ve been through a fair few caves in our time, and this one consistently delivers. It's not a deep dive, peaking around 12 meters, so it’s perfect for newer divers or anyone who just wants an easy, beautiful experience. What we love most here are the light shafts. On a sunny day, they cut through the water like lasers, illuminating the schools of fusiliers that swirl around inside. Seriously, sometimes they're so thick they block your view of the exit. We've seen Mimic Surgeonfish darting through the beams, and Palespot Eviotas peering from the crevices. Keep an eye out for a well-camouflaged Flasher Scorpionfish on the rocky bottom, too – they're masters of disguise. The sheer volume of fish is impressive for a cave environment, and it's a great spot for some relaxed photography. Our top tip? Get there mid-morning for the best light, before any afternoon chop picks up. It’s an easy entry and exit, just a calm surface swim into the main chamber.