Swimming, trekking and surfing are very famous in the Philippines. I have not tried surfing but I'd like to try sometime. Swimming is most of the time on top of the list of Filipinos. There are many wonderful swimming sites in the Philippines since it is an archipelago. In addition, there are wonderful diving sites in the Philippines for everyone to see. Trekking on the other hand is another enjoying outdoor activity. There are many mountains in the Philippines that are waiting to be climbed. Along the way, there are forests that needs to be explored and species that are yet to be discovered.