Sibolga Bay

It is named after the city of Sibolga which is located inside of the bay.

In terms of wildlife, the waters of the bay are home to a large coral reef ecosystem.

[1] The bay lends its name to the species Pongo Tapanuliensis, or the Tapanuli orangutan, a critically endangered great ape native to the region surrounding the bay.

Notable instances of tsunamis in the area include one in 1852[4] and one in 1935, the latter of which reportedly destroyed multiple huts.

[5] The December 26, 2004 Indian Ocean earthquake and tsunami hit the area hard.