Rennell Island - Lake Tegano Dive Site — Solomon Islands
About Rennell Island - Lake Tegano
Lake Tegano on Rennell Island is the largest lake in the insular Pacific and a UNESCO World Heritage Site. This raised coral atoll lake harbours endemic species found nowhere else on Earth, including unique sea snakes and crustaceans adapted to the brackish conditions. Submarine caves around the lake's edge lead to flooded limestone passages decorated with ancient stalactites and stalagmites — evidence of the lake's former life as a dry cave system. The diving is truly expedition-grade: remote, logistically challenging, and requiring self-sufficiency. But for those who make the journey, Lake Tegano offers a genuinely unique diving experience at the intersection of marine biology, geology, and evolutionary science.
Site Information
- Depth: 5–25 m
- Difficulty: expert
- Site type: Cavern
- Current: None
- Best time: May-Oct
- Region: Solomon Islands
Highlights
- UNESCO Site
- Endemic Species
- Saltwater Lake
- Expedition