Located on the Klias Peninsula is the Klias Wetland, a Mangrove Forest Reserve. With the bizarre-looking proboscis monkey gaining as much popularity with the tourists as the orang utan, the Klias Wetland with its largeproboscis population is fast becoming the latest ecotourism destination in Sabah. These tree-dwelling animals normally hunt for food in the evenings so many boat cruises depart the Kota Klias jetty at around 3.00pm.Other riverside residents that may be spotted are macaques, crocodiles, moniter lizards, tree snakes and birds such as the eagle. Back on the jetty, enjoy a natural light show when hundreds of fireflies put on a glowing performance for your benefit.