"The basic land structure of the Philippines was defined probably during the Tertiary, or even as early as the Jurassic (middle Mesozoic) age. The underlying framework of the archipelago when it emerged was the same as today, with slight changes as island forms readjusted in the process of geologic evolution."
http://www.iraia.net/history/history_geological.htm
I am sorry, but the exitence of these Islands pre-dates Biblical history. The point is that just because the Bible doesn't mention something doesn't mean it didn't exist.
The Bible, especially the Penateuch, is a document written for a very specific group of people at a very specific time in history, limited to a very specific geographic area. While it's lessons are timeless, looking to it to prove the existence or non-existence of people, places or things is a foolhardy endeavor.
