Cave Diver, Anhumas Abyss, Bonito, Brazil: The Anhumas Abyss is an underground cavern with a crystal-clear lake below, more than 260 feet (79 m) deep. A visitor must enter through a narrow opening at the top of the chamber and rappel into the cave. Snorkeling and scuba diving in the lake reveal amazing scenery. Distinctive, conical limestone stalagmites and stalactites occupy the lake and the surrounding area, some reaching 65 feet (20 m) high. (Photo by Marcio Cabral/Nature’s Best Photography Awards 2017)

“Honorable Mention”. An Indian rhinoceros, far from home and stuck inside with late-winter blues at the Toronto zoo. Photo location: Toronto, Ontario, Canada. (Photo and caption by Stephen De Lisle/National Geographic Photo Contest)

“Just hanging out”. As full autumn hits the valley of Hallingdal in Norway, this bear chills out in a tree which seems to barely cover its weight. Photo location: Flå, Hallingdal, Norway. (Photo and caption by Jorgen Tharaldsen/National Geographic Photo Contest)

“Slow”. A calm cow in the messy streets of Jodhpur. Photo location: India. (Photo and caption by Matthias Troeger/National Geographic Photo Contest)

“The Challenge!” Young boy relishes in a game of tug of war before school. Photo location: Lake Titicaca, Peru. (Photo and caption by Paul Heyman/National Geographic Photo Contest)

“A Cornish pasty, sometimes known as a pastie or British pasty in the United States, is a filled pastry case, associated in particular with Cornwall in Great Britain. It is made by placing the uncooked filling on a flat pastry circle, and folding it to wrap the filling, crimping the edge at the side or top to form a seal. The result is a raised semicircular package”. – Wikipedia

Photo: Cornish students (R) Nina Brooke, 21 and (L) Bonnie Mably, 20, laugh as they pose for a photograph as they try a Cornish pasty that has been baked as part of the World Cornish Pasty Championships at The Eden Project on March 3, 2012 in St Austell, England. (Photo by Matt Cardy/Getty Images)

A beauty contestant waits backstage during the final of the annual Miss Tiffany's Universe 2016 transvestite contest in the beach resort town of Pattaya, Thailand, May 13, 2016. (Photo by Athit Perawongmetha/Reuters)

A dog rides a wave during the Surf City Surf Dog competition in Huntington Beach, California, U.S., September 25, 2016. The dogs compete in contest categories ranging from small to extra large, to two dogs on a board, as well as owner and dog. (Photo by Lucy Nicholson/Reuters)