Lake · Brunei
Tasek Merimbun
Tasek Merimbun is a lake with dark water in the Tutong District of Brunei, about 70 km from the capital, Bandar Seri Begawan. It is the largest natural lake in the country and lies in a protected park full of wildlife.

Picture credit: Bernard Spragg. NZ (CC0) · Wikimedia Commons
Where is Tasek Merimbun?
Countries on its shores: Brunei.
Largest lake of: Brunei.
Middle of the lake: 4.59° N, 114.68° E
The story behind it
Tasek Merimbun lies about 27 km from the town of Tutong. It is Brunei's largest natural lake, although it covers only about 2.2 km². The lake is shaped like the letter S, and its water is very dark. The colour comes from tannins, natural substances that seep out of leaves that fall into the water and rot. There are two small islands in the lake, and a wooden walkway leads to one of them. On the islands, people have found old treasures: brass and bronze objects, Chinese and European pottery and burial jars of the Dusun people. The land around the lake is a protected park of 7 800 hectares. In 1984 it became the very first ASEAN Heritage Park, a special protected area of the South-East Asian countries. About 200 kinds of birds live here, including hornbills and rare storks, as well as sun bears, slow lorises and tarsiers.
Find it on the globe
Tasek Merimbun is there as a small blue dot with its name, right on the water. From far away the planet is only a blue ball; detail arrives as you zoom in, and this one appears once you are close enough. Open it on the globe.
It sits at its real coordinates, not near them — the same numbers listed in the facts above. Switch off the layer for this kind of place and it disappears again; the buttons for that are down the right-hand edge.
Questions children ask
How big is Tasek Merimbun?
The lake covers about 2.2 km², which makes it the largest natural lake in Brunei. The protected park around it is much bigger, with 7 800 hectares.
Why is the water of Tasek Merimbun so dark?
Leaves fall into the lake and slowly rot. They release tannins, natural substances that colour the water dark brown.
Which animals live around Tasek Merimbun?
The park is home to about 200 kinds of birds, 83 kinds of mammals and 50 kinds of freshwater fish. You might spot hornbills, rare storks, tarsiers or even a sun bear.
Where these numbers come from
Every figure on this page was checked against public reference sources before publication. Where sources genuinely disagree, the text says so.
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