These horses are pictured in the Khentii province in eastern Mongolia during the Winter Horse Festival – where skillful horsemen gather to challenge the strength of their horses and show off their riding skills. Pictures were taken by Batzaya Choijiljav, a travel company director from Mongolia. Here: The fur of a horse ices up in the –40 cold of Mongolia. (Photo by Batzaya Choijiljav/Caters News)

These tiny insects are so well camouflaged it is nearly impossible to make out their cleverly disguised forms. Canadian photographer and adventurer Paul Bertner attempted to catch the bugs in their natural habitats as part of a hide-and-seek game to show biodiversity in nature. Here: Stick insects. (Photo by Paul Bertner/Caters News)

These stunning pictures of beautiful Icelandic waterfalls will take your breath away. The mesmerizing shots show the striking waterfalls set against the night sky and the hypnotic green glow of the northern lights, as well as the picturesque Icelandic scenery and stunning sunrises. Here: A mesmerising waterfall in the Icelandic country-side. (Photo by Arnar Kristjansson/Caters News)

A series of beautiful shots of divers swimming near sunken ships have emerged. Alex Voyer, 39, was sailing around the Caribbean on a 60-foot boat when he stopped for a dive. The images show amazing shipwrecks as free divers explore the seabed. Here: A diver swims in the shallow water under a pier. (Photo by Alex Voyer/Caters News Agency)

Dancers perform as human sculptures during an exhibition in Hong Kong, China, 26 March 2019. The exhibition entitled “Multisensory Exhibition Urban Playgrounds” shows how Austrian artist Willi Dorner uses urban spaces to interpret the relationship between bodies and objects. (Photo by Jerome Favre/EPA/EFE)

A picture made available on 20 October 2015 shows a foreign tourist posing for a souvenir photograph with a figure of a tiger head at a private zoo on Phuket Island, Thailand, 17 October 2015. Each day hundreds of tourists, including young children, visit the private tiger zoo where visitors are allowed to touch and pose for photographs with unchained tigers inside their enclosures. (Photo by Rungroj Yongrit/EPA)

Highly commended birds : Crested guan by Tim Hunt (UK). ‘This photo shows a crested guan in the cloud forests of Costa Rica as it pauses while foraging on a lone branch. Due to the clouds that are so typical for this habitat, I could often only photograph the bird’s silhouette against a grey sky. But then, for a short moment only, the sun broke through the clouds, and I overexposed the image by over two stops in order to blow out the background and allow this beautifully marked bird to stand out’. (Photo by Tim Hunt/GDT European Wildlife Photographer of the Year 2015)

A photo taken on August 29, 2014, shows Mount Tavurvur erupting in eastern Papua New Guinea, spewing rocks and ash into the air, forcing the evacuation of local communities and international flights to be re-routed. Mount Tavurvur, which destroyed the town of Rabaul when it erupted simultaneously with nearby Mount Vulcan in 1994, rumbled to life early in the morning on the tip of the remote island of New Britain. (Photo by Oliver Bluett/AFP Photo)