Twin caves - Vava'u Group
Merikafalhu, often called Tiger Point, is exactly what it sounds like. We descend to around 10 to 11 meters, settle on the sandy bottom, and wait. The dive guides release a small amount of chum, and then the tigers arrive. We’re talking about a resident population of tiger sharks here, drawn in by generations of discarded fish remains from the nearby harbor. It's a structured dive, usually capped at 30 minutes on the seabed, just watching these big predators cruise around, occasionally nudging the stacked fish heads between the rocks. Visibility averages 22 meters, so you get a clear view of the action. It's an intense experience, perhaps not for every diver, but if you're comfortable with large sharks in close quarters, it’s certainly memorable. You might also spot rays, moray eels, and groupers vying for scraps once the main event is over.
- Location
- Vava'u Group, Tonga, Central & South Pacific
- Coordinates
- -18.661400, -174.067200
Marine Protected Area: 'Utungake SMA
Best Time to Dive in Vava'u Group
The warmest water temperatures in Vava'u Group occur in January, averaging 27.8°C. The coolest conditions are in December at 27.8°C.
Monthly Water Temperatures
- January: 27.8°C (air: 27.0°C)
- February: 27.8°C (air: 26.9°C)
- March: 27.8°C (air: 27.1°C)
- April: 27.8°C (air: 26.8°C)
- May: 27.8°C (air: 26.1°C)
- June: 27.8°C (air: 25.1°C)
- July: 27.8°C (air: 24.6°C)
- August: 27.8°C (air: 24.0°C)
- September: 27.8°C (air: 24.5°C)
- October: 27.8°C (air: 24.9°C)
- November: 27.8°C (air: 25.7°C)
- December: 27.8°C (air: 26.5°C)
Nearby Dive Sites in Vava'u Group
- AX Factor Dive House Reef (wreck)
- AX Factor Dive House Reef (reef)
- CLAN MACWILLIAM - 30m (wreck)
- Clown fish city
- FANTASY - 10m (wreck)
- Fingers (cave)
- GLEN MACWILLIAM - 40m (wreck)
- Historic Dive Wreck Clan Mc William (reef)
- Mariner's Cave - 3-8m (cave)
- Playground - 20m
- Swallows Cave - 3-12m (cave)
- The Arch - 10-25m (reef)
Nearest Dive Centres to Twin caves
Marine Life in Vava'u Group
Home to 322 recorded species including 300 reef fish, 9 sea cucumbers, 4 sea snails & nudibranchs, 2 sharks & rays, 2 whales & dolphins, 2 hard corals.
Notable Species
- Bristle-toothed Surgeonfish (Ctenochaetus striatus) - Reef Fish
- Bullethead Parrotfish (Chlorurus sordidus) - Reef Fish
- Blackspot Surgeonfish (Acanthurus nigrofuscus) - Reef Fish
- Schlegel's Parrotfish (Scarus schlegeli) - Reef Fish
- Blue-lined Tang (Zebrasoma scopas) - Reef Fish
- Rivulated Parrotfish (Scarus rivulatus) - Reef Fish
- Banded Goatfish (Parupeneus multifasciatus) - Reef Fish
- Bleeker's Parrotfish (Chlorurus bleekeri) - Reef Fish
- Halfmoon triggerfish (Sufflamen chrysopterum) - Reef Fish
- Wrasse (Thalassoma lunare) - Reef Fish
- Dusky Parrotfish (Scarus niger) - Reef Fish
- Kihikihi (Zanclus cornutus) - Reef Fish
- Atoll Butterflyfish (Chaetodon mertensii) - Reef Fish
- Hoeven's wrasse (Halichoeres melanurus) - Reef Fish
- Clown Tang (Naso lituratus) - Reef Fish
- Parrotfish (Thalassoma lutescens) - Reef Fish
- Coral Beauty (Centropyge bispinosa) - Reef Fish
- Bandcheek wrasse (Oxycheilinus digramma) - Reef Fish
- Desjardin's Sailfin Tang (Zebrasoma velifer) - Reef Fish
- Redfin Butterflyfish (Chaetodon lunulatus) - Reef Fish
Recommended Packing List for Twin caves
Based on average water temperature of 27.8°C.
- Shorty or Rashguard - warm 28°C water needs minimal exposure protection
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories