A young farmer harvests water lilies from a canal in Barisal, Bangladesh on October 12, 2019, where the flowers cover the 10,000-acre waterway, to take to nearby markets. (Photo by Azim Khan Ronnie/Caters News Agency)

Israelis take cover as a siren sounds a warning of incoming rockets fired from the Gaza Strip, in Ashkelon, southern Israel, Sunday, May 16, 2021. (Photo by Heidi Levine/AP Photo)

Fallen leaves cover the undergrowth as a commuter on a bicycle makes her way through the Tiergarten park in central Berlin on December 7, 2020. (Photo by Odd Andersen/AFP Photo)

The shortlist for the coveted Bird Photographer of the Year awards has been announced by Nature Photographers and the British Trust for Ornithology. Here: Red-billed oxpecker on an impala, Kruger National Park, South Africa. (Photo by Edmund Aylmer/BPOTY/Cover Images/The Guardian)

People run for cover following an explosion in Beirut's port area, Lebanon on August 4, 2020. A mega-blast tore through the harbour in the heart of the Lebanese capital with the force of an earthquake, killing more than 100 people and injuring over 4,000. (Photo by Mohamed Azakir/Reuters)

A man crosses a mud-covered trail carrying his wife on his back at a flooded Han River park in Seoul, South Korea, August 4, 2020. (Photo by Kim Hong-Ji/Reuters)

“Asaro from the Eastern Highlands”. The mudmen could not cover their faces with mud because the people of Papua New Guinea thought that the mud from the Asaro river was poisonous. So instead of covering their faces with this alleged poison, they made masks from pebbles that they heated and water from the waterfall, with unusual designs such as long or very short ears either going down to the chin or sticking up at the top, long joined eyebrows attached to the top of the ears, horns and sideways mouths. (Photo and caption by Jimmy Nelson)

Students from St Andrews University indulge in a tradition of covering themselves with foam to honour the “academic family” on the lower college lawn on October 23, 2017, in St Andrews, Scotland. (Photo by Jeff J. Mitchell/Getty Images)