As of Jun 19, 2026, 8:54 PM, out of season, returns ~January. Earth Exhibit tracks the live conditions and flags it the moment it is on.
Mangrove-dwelling fireflies (Pteroptyx spp.) gather in coastal rivers and estuaries near Puerto Princesa, Palawan, producing steady, clustered flashes along mangrove trunks and branch tips.
Local community boat tours take visitors at night through narrow channels to view the bioluminescent displays that are most visible on calm, moonless evenings.
Where to see it
A taste of where to see it. The full map, exact coordinates and the best timing for each spot live in the app.
| Viewing spots |
|---|
| Iwahig River Mangrove Firefly Tour |
| Bakawan Mangrove Boardwalk Firefly Site (Sta. Lourdes) |
| + 1 more spot, with exact coordinates and timing, in the app → |
This is the short version
This page shows a taste. The app has the full list of where to see this, the exact timing, and live conditions for 1,000+ natural phenomena worldwide, so you know the moment one is genuinely worth the trip.