David Goffin of Belgium meets a koala during a promotional event for the Australian Open tennis tournament at Melbourne Park on January 17, 2018. (Photo by Fiona Hamilton/Reuters/Tennis Australia)

Dancers perform during the annual Tbilisoba festival, celebrating Tbilisi City Day in Tbilisi, Georgia, October 17, 2015. Tbilisoba is an annual October festival, celebrating the diversity and history of Tbilisi, the capital of Georgia. (Photo by David Mdzinarishvili/Reuters)

Fish weighing over 80 kilogram is cooked in a hotpot during a food festival in Zhengzhou, Henan province, China, October 17, 2015. (Photo by Reuters/Stringer)

Actress Kristen Schaal attends the 21st Annual Critics' Choice Awards at Barker Hangar on January 17, 2016 in Santa Monica, California. (Photo by Christopher Polk/Getty Images for The Critics' Choice Awards)

Female bodybuilders prepare to compete in the “Miss Bikini” category of the NABA/WFF Asia-Seoul Open Championship in Seoul on April 17, 2016. (Photo by Ed Jones/AFP Photo)

Models walk down the runway during the Robb & Lulu swimwear show as part of Funkshion Fashion Week Swim, Friday, July 17, 2015, in Coral Gables, Fla. (Photo by Lynne Sladky/AP Photo)

A brilliant sunset makes for a fun silhouette picture by jumping between sand bars at Shi Shi Beach on the Olympic Peninsula Friday July 17, 2015. (Photo by Bettina Hansen/The Seattle Times)

Clearing skies await a tripod-toting photographer looking for a spot to capture the early-morning light at Portland Head Light, Thursday, January 17, 2013, in Cape Elizabeth, Maine. (Photo by Robert F. Bukaty/AP Photo)