The document defines and provides examples of various waterforms found in the Philippines, including brooks, springs, rivers, lakes, waterfalls, seas/oceans, bays, and gulfs. It specifically mentions the Pasig River, Taal Lake, Pagsanjan Falls, Philippine Sea, and Subic Bay. Hidden Valley Springs in Laguna is highlighted as a private resort area containing a 300 foot deep crater, virgin forest, and natural spring pools.