Sabah is filled with biodiversity-rich mangrove ecosystems, characterised by its meandering rivers. Journeying down one of these rivers on a 12-foot boat is a popular way to explore these ecosystems, particularly the unique wildlife that live and depend on it. Semporna, on the east coast of Sabah, is a popular draw for divers and snorkelers who head to this region to dive in waters surrounding the islands of Sipadan, Mabul and Kapalai. In recent times, it has become a trend to take time out from diving to explore the wildlife that exists above the ground, heading off for a river cruise to catch a glimpse of the fascinating Proboscis Monkey, the long-nosed monkey endemic to the island of Borneo. Chances are also high to see crocodiles silently moving through the surface of the water, giant fruit bats in their hundreds, and fireflies lighting up the sky after dark.

A sighting of the Proboscis Monkey, also known as Monyet Belanda (Dutch Monkey, in the national language of Malaysia), is enough to satisfy me on any river cruise. This species are sighted primarily in mangrove forests, eating, sleeping and resting on trees along the river bank. Their features and characters are fascinating: from their large noses (for both males and females, though obviously much larger in the males), to the strange noises they emit when sensing danger or trying to attract females.

Divers and snorkellers often wonder what else there is to do while in Semporna, the quaint town most popularly serving as the gateway to the fascinating underwater world. This is what I will tell them - go see the Proboscis Monkeys. It is a short, 25 minute ride from Semporna town. Keen birders can expect to see horn bills and kingfishers while enjoying a traditional Malaysian high-tea. During the hour-long cruise, it is important to keep your camera handy and ready as you travel slowly down the Buaya and Pegagau rivers. Sit back and relax. Enjoy the peaceful and scenic setting of nature, and the diversity of the riverine wildlife.

Nature viewing is one of the main reasons to visit Sabah, on the island of Borneo. For divers and snorkellers who love the wonders and colours of marine life, a river cruise so close to their diving haven offers another option for wildlife observation while in Semporna: the "on land" option! A perfect way to capture the best of both worlds.

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Read more about Proboscis Monkey on this website.