Mountain and sea always make a perfect combination. I've done many hikes in the past, but those that go together with a beach destination, whether an island paradise or a crystalline cove, more often than not, are the most rewarding. A perfect example of this and probably the first to come in mind when talking about mountain-sea combo trip are the mountains of Zambales, particularly the ones located in the coastal towns of San Antonio and Subic.
A traverse hike of Mt. Cinco Picos (or literally, Five Peaks), in combination with the secluded Silanguin Cove at the end of its trail is among those popular Zambales mountain-sea destination.