The National Geographic Photo Ark is a travelling exhibition of photographer Joel Sartore’s quest to create a photo archive of biodiversity around the world. So far, Sartore has captured studio portraits of more than 6,000 species – a number that he hopes to double. On 1 July, the ark will open at Melbourne zoo – the first time it has been exhibited in the southern hemisphere. More than 50 portraits will be on display, including many of Australian endangered animals being protected by programs at the zoo itself. These captions have been edited from text supplied by Melbourne zoo. Here: Barking owl. (Photo by Joel Sartore/National Geographic Photo Ark/The Guardian)

Is it a leaf? Is it tree bark? No, it’s the Satanic leaf-tailed gecko. Cleverly disguised as a rotting leaf, Madagascar’s camouflage king has red eyes, pointy horns and a taste for night hunting: it’s nature’s most devilish deceiver. The twisted body and veiny skin echo the detail of a dry leaf, which ensures the gecko blends in with its forest home. The mottled tail appears to have sections missing, as though it has withered over time. This mini-monster epitomises survival of the fittest, having adapted gradually to become today’s extraordinary leaf impersonator. (Photo by Thomas Marent/ARDEA)

Crocodile skin is seen at a workshop in the old Medina of Marrakesh December 13, 2014. (Photo by Youssef Boudlal/Reuters)

On February 16, 2025, Finna Indriani, a 27-year-old female jockey, showcased her skills in a specialized “sport-action” performance during the “Roda Gila” entertainment event at a traditional night market in Deli Serdang, North Sumatra Province, Indonesia. (Photo by Sutanta Aditya/Rex Features/Shutterstock)

A young Muslim girl looks on as an elder helps her tie her hijab before the Eid al-Fitr prayer at Masjid Jamek Cina Muslim Klang on March 31, 2025, in Selangor, Malaysia. The mosque, inspired by the Great Mosque of Xi’an, blends Chinese and Islamic architectural influences, reflecting the nation’s rich cultural harmony. Eid al-Fitr, marking the end of Ramadan, is a time of prayers, family reunions, and celebration for Muslims worldwide. (Photo by Annice Lyn/Getty Images)

Gray whale feeding at the surface and showing it's baleen. (Photo by Christopher Swann/Biosphoto)

An Orangutan named “Pacquiao” and zoo owner Manny Tangco, wearing Santa costumes, embrace in front of Brown Philippine Deer while giving school children a tour ahead of the next week's Christmas celebration Thursday, December 18, 2014 in suburban Malabon city, north of Manila, Philippines. The yearly treat is aimed at encouraging residents to be sensitive to the feelings of animals especially when exploding firecrackers for the raucous celebration. (Photo by Bullit Marquez/AP Photo)

Black softshell turtle or Bostami turtle (Nilssonia nigricans), extremely rare and critically endangered species of tortoise is seen in a pond in Chittagong, Bangladesh on March 1, 2022. For decades, the breeding grounds have shrunk and their habitat has been threatened by habitat pollution. (Photo by Mohammad Shajahan/Anadolu Agency via Getty Images)