The document summarizes key aquatic and terrestrial ecosystems in the Philippines. It describes various freshwater lotic and lentic systems such as rivers, falls, lakes and springs. Marine ecosystems discussed include coral reefs, beaches, and deep sea trenches. Terrestrial ecosystems highlighted are tropical rainforests, which are among the richest in biodiversity, and include lowland dipterocarp forests and montane and mossy forests. A wide variety of bird, mammal and herp species are also noted.