Two baby opossums play on a branch, with one using its tail to cling on, while photographer Ronald Wittek took this photo while visiting a farm in Minnesota, USA. (Ronald Wittek/Arco Images/Solent News)

A silhouette of short-eared owl (Asio flammeus) in flight at dusk, Worlaby Carrs, Lincolnshire. This image is part of a new outdoor street-gallery exhibition that has been launched on the South Bank of the River Thames in London, documenting the best of the 2020VISION wildlife project. (REX FEATURES)

Photographer Rainer Schimpf photographing sharks off the coast of Port Elizabeth, South Africa. (Rainer Schimpf / Barcroft Me)

A group of skydivers hurtle towards Earth after jumping out of a plane near Mount Everest, Nepal. The thrill seekers are equipped with specialised military and parachute equipment, including oxygen masks to keep them alive during the high altitude adventure. Starting at a dizzying height of 18,000 ft above sea level only 30 brave divers a year will soar over the mountains before floating back down to Earth at the drop zone located 12,350ft above sea level. (Caters)

Two green turtles look as if they are kissing while swimming off the coast of Tenerife, Spain. (Montse Grillo / Barcroft Media)

A lion stalks a zebra against the crimson dawn skies of the Masai Mara, Kenya. (Paul Goldstein/Rex Features)

Photographer Richard Gottardo waited patiently for three months in freezing temperatures to capture in a time-lapse photo star trails above the Rocky Mountains. (RICHARD GOTTARDO / CATERS NEWS)

Tiny one-year-old Kayla and her brother, three-year-old Malan, have formed an extraordinary bond with the two creatures after growing up cheetahs, Wakuu and Skyla, in their home in South Africa. (CATERS)

Travelling at a top speed of 70mph, this cheetah chased and caught a fake chicken as staff at the Mukuni Big 5 safari in Livingstone, Zambia, prepared it for its life back in the wild. (Barcroft)

An elephant showers a leopard with water to protect the herd. The leopard had been stalking the herd of around 15 elephants when one decided to frighten it off. The picture was taken by Mark Muller in Etosha National Park of Namibia at the Kalkeuwel waterhole. (MARK VINCENT MULLER / CATERS NEWS)