Maquinit Saltwater Hot Springs

year-round; best at sunset

One of the very few saltwater hot springs on earth — a geothermal 38–40°C pool ringed by mangroves on Busuanga's coast, about 30 minutes by tricycle from Coron town. Local's tip: come at golden hour after a day of island-hopping; the warm brine soaks the salt and sun-fatigue out of your shoulders, and you'll likely have it nearly to yourself.

Source: www.thepoortraveler.net