Big-Nosed Monkey Is the 6,000th Member of the Photo Ark
Photographer Joel Sartore is on a quest to document all 12,000 captive species on Earth.
And then there were 6,000. Photographer Joel Sartore took this milestone image of a male proboscis monkey at the Singapore Zoo for the Photo Ark.
Scientists think male proboscis monkeys' fleshy, pendulous noses create an echo chamber that amplifies its call, impressing females and intimidating rival males.
Native to Borneo, these tree-dwellers live in organized harem groups consisting of a dominant male and two to seven females and their offspring. Various groups often congregate near water at night to sleep.
The National Geographic Photo Ark is an ambitious project committed to documenting every species in captivity—inspiring people not just to care, but also to help protect these animals for future generations.
Sartore, the project's founder, has visited more than 40 countries in
