My favorite of the photos features a male orangutan, grasping an overhanging branch in his left hand, using a wooden pole in an attempt to spear fish in the local river. The photo was taken in Borneo on the island of Kaja, and the intrepid ape had witnessed local fishermen use the spears on the nearby Gohong River. According to the photographer, the orangutan was unsuccessful in his endeavor but later succeeded by using the same pole to catch fish already trapped in locals' fishing lines.
|Monkey Business: An orangutan tries to spear a fish for dinner|
Unfortunately, orangutans—while being the two exclusively Asian species of extant great apes—are endangered and currently only found in the rainforests of Borneo and Sumatra. The island of Kaja, where this photo was captured, is unique as it's where apes are re-released after being rescued and rehabilitated.
If you're interested in reading more about the plight of the orangutans, please see this blog post or watch Sir Terry Pratchett's newly released and excellent documentary, Facing Extinction.