A woman sunbathes, while police patrol nearby, as a meeting of G7 leaders takes place in St. Ives, Cornwall, England, Saturday, June 12, 2021. Leaders of the G7 gather for a second day of meetings on Saturday, in which they will discuss COVID-19, climate, foreign policy and the economy. (Photo by Jon Super/AP Photo)

A young female demonstrator is arrested by police during clashes in the Causeway Bay area of Hong Kong, China on October 6, 2019. Hundreds of thousands of protesters marched through the city's streets in defiance of the new “no-mask” law, which was introduced two days ago as demonstrations roll into a 14th week. (Photo by Rick Findler/EPA/EFE/Rex Features/Shutterstock)

American model and actress Taylor Hill attends the gala ceremony of the 77th Venice International Film Festival in Venice, Italy, September 2, 2020. (Photo by Manuel Silvestri/Reuters)

Thousands of species of amphibians are endangered and hundreds have already disappeared, but in recent years, a team of scientists and conservationists have re-discovered some of these “lost” species and uncovered previously unknown varieties. Here: Miniature glass frog. (Photo by Robin Moore)

In this picture taken on October 27, 2019 lightening strikes on a building during a thunderstorm in Bangkok. (Photo by Mladen Antonov/AFP Photo)

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)

Police officers introduce a litter of golden retriever puppies to be trained as police dogs during a ceremony at the National Police Academy in La Paz, Bolivia, Monday, August 16, 2021, the date of the feast day for Saint Roch, considered the patron saint of dogs, among other things. (Photo by Juan Karita/AP Photo)

Scott Meiklejohn gets into character as a mummy during a photo call on October 10, 2019 in Stirling, Scotland ahead of “Hallowild”, Blair Drummond Safari Parks annual Halloween event. This years theme in the haunted walkway is an egyptian tomb with special 3D effects alongside actors playing the roles of Pharaohs and Mummies. (Photo by Andrew Milligan/PA Images via Getty Images)