“Show Time”. It's a normal behavior of mantis. They're doing defence. When they're afraid of; raising their arms and spreading their wings. They looks like smiling dancer. Photo location: Nicosia, Cyprus. (Photo and caption by Hasan Baglar/National Geographic Photo Contest)

A soldier poses with a Hythe Mk III Gun Camera during training activities at Ellington Field, Houston, Texas in April of 1918. The Mk III, built to match the size, handling, and weight of a Lewis Gun, was used to train aerial gunners, recording a photograph when the trigger was pulled, for later review, when an instructor could coach trainees on better aiming strategies. (Photo by Harry Kidd/WWI Army Signal Corps Photograph Collection via The Atlantic)

A Sri Lankan activist, who wrapped himself with fire crackers, walks in Colombo on July 23, 2014 to symbolically demonstrate against people burned during Anti-Tamil riots on the island thirty-one years ago. Official accounts placed the death toll at 400 while human rights activists put the toll at thousands. (Photo by Ishara S.Kodikara/AFP Photo)

Germany's Angelique Kerber reacts after popping a bottle of champagne, a day following her win in the final match at the Australian Open tennis tournament, at the Government House in Melbourne, Australia, January 31, 2016. (Photo by Issei Kato/Reuters)

French firemen wearing chemical protective suits take part in a mock chemical attack exercise at the Geoffroy Guichard stadium in Saint-Etienne, France, April 4, 2016 in preparation of security measures for the UEFA 2016 European Championship. (Photo by Robert Pratta/Reuters)

A great tit eats food from the top of a photographer's hat as the press wait for politicians on Downing Street on December 16, 2019 in London, England. The UK's Prime Minister is set to hold a mini Cabinet reshuffle to replace outgoing ministers following last week's general election victory. (Photo by Leon Neal/Getty Images)

An actor dressed as Tyrion Lannister, poses for photographers with fake severed head before the screening of final episode of “Game of Thrones” on 20-meter-high screen at RZD Arena in Moscow, Russia on May 20, 2019. (Photo by Maxim Shemetov/Reuters)

A Polish girl and a boy throw water over each other on Wet Monday in Szczecin, northwestern Poland, 13 April 2020. Wet Monday is a Catholic celebration held on Easter Monday mostly in Poland, but also in the Czech Republic, Slovakia, Hungary and some parts of western Ukraine. Due to the lockdown it is forbidden to celebrate this holiday in public. (Photo by Marcin Bielecki/EPA/EFE)