The Arenal Oasis Frog Watching Night Walk is led by a certified naturalist guide that takes visitors along the flat trails of the Arenal Volcano National Park in search of frogs and other animals that may be hiding out of sight. The ponds of Arenal Oasis are home to approximately 28 frog species, making it the ideal place for night time frog spotting. The tour includes flashlights, entrance fee, drinks, and round trip transportation.