The 26th annual National Geographic Traveler Photo Contest is now accepting submissions. Official categories include: “Travel Portraits”, “Outdoor Scenes”, “Sense of Place” and “Spontaneous Moments”. The contest is accepting entries until June 30. Photo: “Forest lights”. Aurora Borealis over the forest of the Pyhae Luosto National Park, Finland. (Photo and caption by Nicholas Roemmelt/National Geographic Traveler Photo Contest)

This composite image shows a sequence, from bottom left to top left, of the moon's transition during a total lunar eclipse on April 15, 2014 in Miami, Florida. People in most of north and south America should be able to witness this year's first total lunar eclipse, which will cause a “blood moon” and is the first of four in a rare Tetrad of eclipses over the next two years. (Photo by Joe Raedle/Getty Images)

“Artist Paula Swisher has come up with a quirky way of lessening the stress of household bills - by doodling highly intricate birds on each one. Swisher, 37, has drawn hundreds of birds in her lifetime and puts her love of ornithology down to the nature walks she went on as a youngster. Looking for work during the recession, she began sketching birds on the inside of books, seeing the practice as a creative way to mutate the pages into something fresh. But now she's made the transition from books to bills – while admittedly making a playful commentary on the predatory banking businesses”. – Caters News. (Photo by Paula Swisher/Caters News)

Children wearing uniforms hold toy guns during a military parade game on China's National Day, at Beyou World, a centre children where can experience different kinds of professions, in Beijing, October 1, 2015. (Photo by Reuters/Stringer)

This Thursday, April 30, 2015 photo shows Lebanese citizens walking on the Corniche, or waterfront promenade in Beirut, Lebanon. This photo was shot through the lowered veil of a niqab, which is worn by some conservative Muslim women. The cloth allows women to follow a strict interpretation of their religious beliefs by preventing others from seeing their faces. (Photo by Hassan Ammar/AP Photo)

A leopard leaps into a muddy waterhole to catch a fish on August 13, 2015, in the Savuti Channel in Botswana. A leopard leaps into a muddy waterhole to catch a fish in the Savuti Channel in Botswana. The spotted predator stood poised waiting for a fish to appear – before leaping in ferociously with lightening reflexes. Coated in a layer of thick dark mud the big cat emerged from the water clutching the fish in its jaws. The fishing leopards of Savuti are known for their unique skills in catching fish – but have rarely been photographed. (Photo by Greatstock/Barcroft Media)

A member of the Central Industrial Security Force (CISF) reacts as her mother (L) places a badge with stars on the uniform during the 34th batch assistant commandants pipping ceremony at the National Industrial Security Academy (NISA) in Hyderabad on October 29, 2021. (Photo by Noah Seelam/AFP Photo)

Randy Orton is seen in action against Rey Mysterio during the single match of WWE “Crown Jewel” World Cup 2018 tournament at King Saud University stadium in Riyadh, Saudi Arabia on November 2, 2018. (Photo by Faisal al Nasser/Reuters)