The Lagoon — A Natural Wonder
Bora Bora's lagoon is the result of millions of years of geology: The volcano that once formed the island has slowly sunk into the sea, while the coral reef continued to grow, forming the visible ring of reefs and motu islands today. In between lies the lagoon — a protected, shallow basin containing all shades of blue in the color spectrum.
The Lagoon in Numbers
- Area: About 50 km² of lagoon (larger than the main island itself)
- Depth: 1–40 meters, averaging 5–10 meters
- Water Temperature: Year-round 26–29°C
- Visibility: 20–40 meters (best in the dry season)
- Access to the Open Ocean: One main pass (Teavanui Pass) on the west side
Why is the Water So Blue?
The incredible colors of the lagoon have scientific reasons: The white coral sand at the bottom reflects the sunlight, the shallow depth enhances the colors, and the lack of sediment (no river flows into the lagoon) ensures crystal-clear purity. The result: a color spectrum from aquamarine through turquoise and sapphire to cobalt blue, constantly changing with the position of the sun and the clouds.
