David Nickerson, 24, rides a wave dressed as Mrs Doubtfire during the 7th annual ZJ Boarding House Haunted Heats Halloween surf contest. (Photo by Lucy Nicholson/Reuters)

Children wave Vietnamese and American flags while waiting for arrival of U.S. President Barack Obama (not pictured) before a welcoming ceremony at the Presidential Palace in Hanoi, Vietnam May 23, 2016. (Photo by Reuters/Kham)

A tourist struggles in the water, before standing up and wading away, after a wave strengthened by the influence of Typhoon Dujuan hit a river bank in Hangzhou, Zhejiang province September 29, 2015. (Photo by Reuters/China Daily)

A Mapuche Indian child waves a Mapuche people flag during a protest march by Mapuche Indian activists against Columbus Day in downtown Santiago, Chile, October 12, 2015. (Photo by Ivan Alvarado/Reuters)

Pope Francis waves as he arrives at the Kangemi slums on the outskirts of Kenya's capital Nairobi, November 27, 2015. (Photo by Goran Tomasevic/Reuters)

A propaganda troupe perform a flag- waving routine outside the central railway station in Pyongyang, North Korea on September 27, 2017. (Photo by Ed Jones/AFP Photo)

Two copper sharks ride the waves in Red Bluff Beach, Australia on July, 2020. Professional photographer Sean Scott, 43, from Burleigh Heads, Australia, caught the stunning snap. (Photo by Sean Scott/MediaDrumImages/@seanscottphotography)

A girl walks past outside a house damaged by tidal waves at Meulaboh beach in Aceh province on July 12, 2020. (Photo by Chaideer Mahyuddin/AFP Photo)