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Labuan Bajo sits at 8° south of the equator, where UV radiation is among the highest on Earth. Sun exposure during long boat rides, surface intervals, and island visits is intense and can cause serious sunburn quickly.
| Protection | When to Use | Notes |
|---|---|---|
| Reef-safe sunscreen (SPF 50+) | Apply before every boat trip and reapply between dives | Mineral-based only (zinc oxide or titanium dioxide). Chemical sunscreens damage coral. |
| Rash guard / UV top | On the boat and during surface intervals | Provides UPF 50+ protection without sunscreen reapplication |
| Wide-brimmed hat | On the boat between dives | Protects face, ears, and neck — areas most prone to burning |
| UV-protective sunglasses | On the boat | Glare off the water intensifies UV exposure to eyes |
| Buff / neck gaiter | Boat transit and surface intervals | Protects neck and can be pulled up to cover face |
Chemical sunscreens containing oxybenzone and octinoxate are toxic to coral at extremely low concentrations. When thousands of divers and snorkellers enter the water daily, the cumulative impact is significant. Mineral-based sunscreens using zinc oxide and titanium dioxide provide effective UV protection without harming marine life.
Many divers apply sunscreen in the morning and forget to reapply. After 2 to 3 hours on a boat, plus salt water and sweat, your initial application has largely washed off. Reapply between every dive and especially before the return transit.