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)

A refugee sits in front of a Greek riot police cordon during a protest at the Greek-Macedonian border, near the Greek village of Idomeni, March 1, 2016. (Photo by Alexandros Avramidis/Reuters)

Migrant children play with leaves during Christmas Eve at a shelter, as they travel with their parents as part of a caravan with humanitarian visas to transit throughout the country, in Monterrey, Mexico on December 24, 2021. (Photo by Daniel Becerril/Reuters)

Star of Cabaret, English actor Eddie Redmayne attends The Olivier Awards 2022 with MasterCard at the Royal Albert Hall on April 10, 2022 in London, England. (Photo by David Levene/The Guardian)

An indigenous woman looks on during the Terra Livre (Free Land) camp, a protest-camp to defend indigenous land and cultural rights that they say are threatened by the right-wing government of Brazil's President Jair Bolsonaro, in Brasilia, Brazil on April 4, 2022. (Photo by Adriano Machado/Reuters)

Performers ride atop a car leading to the the National Circus Day celebration in Santiago, Chile, Saturday, September 4, 2021, amid the new coronavirus pandemic. Chile's Culture Minister set the stage for the first circus performances with a ringside public since the beginning of the pandemic quarantine measures as the South American country looks to fully roll back almost all COVID-19 related restrictions. (Photo by Esteban Felix/AP Photo)

Member of the Imperio da Tijuca Samba School during the 2019 Carnival Series A parade in the Marques do Sapucaí Sambadrome in the city of Rio de Janeiro this Sunday, March 3, 2019. (Photo by William Volcov/Brazil Photo Press)

Men try to get control of a bucking horse a Tradition Day rodeo exhibition during, in San Antonio de Areco, Argentina, Sunday, November 13, 2022. Tradition Day, aimed to preserve gaucho traditions, is celebrated to honor the birth of Argentine writer Jose Hernandez, author of the country's national poem, “The Gaucho Martin Fierro”. (Photo by Natacha Pisarenko/AP Photo)