[2] This transformation puzzled Si Tutong and his brother, who realised that the sharks that had rescued them were no ordinary creatures.

However, they promised to assist Si Tutong's descendants whenever they needed help, especially when facing threats or attacks from crocodiles in rivers or seas.

It is a common tradition among communities to name places after significant events, people, animals, plants, fruits, or other notable occurrences.

[3] Tutong Town is one of the largest human settlements in the district in which the river passes through,[4] and it has a small commercial jetty used by locals.

[6] Several more kampongs such as Lubok Pulau, Nyanyag, Tanjong Maya, Layong, and Rambai also lie upstream of the river.

Some of Brunei's historical sites are located along the river banks, including: The Jambatan Lama (Old Bridge) was built around 1950.