Sumo wrestlers of Nishonoseki clan appeal to the winner of a training bout for the next opponent during a joint training session ahead of the May Grand Sumo Tournament in Tokyo May 2, 2015. (Photo by Toru Hanai/Reuters)

For centuries the Highlands peoples of Papua New Guinea fought over land, women and pigs. Sorcery and battle skills could elevate a clan to Bigmanship, where the bigger the “presentation”, the bigger the man. Clans therefore would paint their bodies and create fearsome masks as part of their psy. Here: These are the terrifying tribe of “mudmen” from a remote part of Papua New Guinea. (Photo by Jeremy Hunter/Exclusivepix Media)

Meerkats at ZSL (Zoological Society of London) London Zoo received an early Christmas gift from their keepers of home-made crackers filled with meal worms and locusts on December 17, 2009 in London, England. (Photo by Oli Scarff/Getty Images)

These powerful images capture the spear-wielding tribes of Papua new Guinea who believe they are possessed with the spirit of the crocodile. They show how the Kangunaman clansmen scar their backs to resemble reptile scales while the Huli Wigmen wear elaborate headdresses to signal they are ready for battle. (Photo by Trevor Cole/Media Drum World)

Kim and Khloe Kardashian turned up the heat on the sandy shores of Turks and Caicos on April 6, 2024. The glamorous sisters were spotted soaking up the sun in their stunning snake skin bikinis while enjoying quality beach time. Though their kids weren't pictured, the Kardashian clan was making the most of their paradise getaway while Kim wore her cowboy hat in the water. Pictured: American media personality Kim Kardashian. (Photo by Backgrid USA)

A sales assistant poses for photographs with a mealworm cookie in Seoul, South Korea, August 8, 2016. Insect-eating, or entomophagy, has long been common in much of the world, including South Korea, where boiled silky worm pupae, or beondegi, are a popular snack. Now, South Korea is looking to expand its insect industry as a source of agricultural income. (Photo by Kim Hong-Ji/Reuters)

Underwater photographer Alexander Semenovs has snapped some of the most stunning, fragile life forms anywhere on planet Earth. Shot in deep, dark conditions, the images continue to provide an insight into what lies beneath, with glowing creatures appearing a lot like aliens in the pitch-black water. Semenovs has shot the likes of bioluminescent jellyfish, aggressive-looking worms and many species that leave a lot to the imagination. The 30-year-old from Moscow does the majority of his work in the White Sea, near the Arctic Circle. Here: A Comb jelly – Beroe cucumis. (Photo by Alexander Semenovs/Caters News)

The Kazakhs are the descendants of Turkic, Mongolic and Indo-Iranian tribes and Huns that populated the territory between Siberia and the Black Sea. They are a semi-nomadic people and have roamed the mountains and valleys of western Mongolia with their herds since the 19th century. The ancient art of eagle hunting is one of many traditions and skills that the Kazakhs have, in recent decades, been able to hold on to. They rely on their clan and herds, believing in pre-Islamic cults of the sky, the ancestors, fire and the supernatural forces of good and evil spirits.