A blue eyed cockatoo (Cacatua ophthalmica) at the Jurong Bird Park.

Featured species: A blue eyed cockatoo (Cacatua ophthalmica) at the Jurong Bird Park. This species is listed as vulnerable on IUCN.

The National Geographic Photo Ark, led by photographer Joel Sartore, is a multiyear effort to document every species living in zoos and wildlife sanctuaries, inspire action through education, and help save wildlife by supporting on-the-ground conservation efforts.

Explore the thousands of photos and videos in the Ark to find out more about wildlife around the world and the threats they face in the wild:

Instagram: @joelsartore
Facebook: @sartorephoto