Building a Photo Ark

National Geographic photographer Joel Sartore has spent the past ten years working on a massive project to document the world’s biodiversity, called the Photo Ark. The April issue of National Geographic magazine features Sartore’s portraits. Over the past decade, he has photographed more than 5,600 animals and says he won’t stop until he’s documented every one of the estimated 12,000 birds, fish, mammals, reptiles, amphibians, and invertebrates in captivity. National Geographic has been kind enough to share a handful of these portraits with us, and they invite readers to take their online quiz: What Animal Is Most Like You?

Read more
Hints: View this page full screen. Skip to the next and previous photo by typing j/k or ←/→.

Most Recent

  • © Karsten Mosebach / GDT Nature Photographer of the Year 2025

    Winners of the GDT Nature Photographer of the Year 2025

    A collection of winning and honored images from this year’s nature-photo competition

  • ESA / Hubble & NASA, K. Noll

    The 35th Anniversary of the Hubble Space Telescope

    A collection of amazing recent images made with the Hubble Space Telescope

  • Andrew Harnik / Getty

    Photos of the Week: Pony Run, Corgi Race, Rocket War

    Mourners of Pope Francis gathered at the Vatican, scenes from the the second weekend of Coachella 2025, a humanoid-robot half-marathon in China, and much more

  • Olivier Morin / AFP / Getty

    Photographing the Beauty of the North

    Images of the people, animals, and landscapes of the Earth’s arctic and subarctic regions, photographed by Olivier Morin