Behaviour: Mammals category. Giant Gathering by Tony Wu, USA. Dozens of sperm whales mingled noisily off Sri Lanka’s northeast coast, stacked as far down as Tony could see. This was a congregation of dozens of social units, like a gathering of the clans. Aggregations like this could be a critical part of the whales’ rich social lives but are rarely reported. Some two thirds of the population was wiped out before commercial whaling was banned in 1986. This kind of major gathering could be “a sign that populations are recovering”, says Tony. (Photo by Tony Wu/Wildlife Photographer of the Year 2017)

A tourist poses on the glass-bottom bridge at Zhangjiajie Grand Canyon on August 20, 2016 in Zhangjiajie, Hunan Province of China. The Zhangjiajie Grand Canyon's glass-bottomed bridge welcame its trial operation on Saturday and about 8,000 tourists crowded to view the grand glass bridge. (Photo by VCG/VCG via Getty Images)

Ex-Pussycat Dolls singer Nicole Scherzinger and The Cuban Brothers perform at the de Grisogono party during the 71st annual Cannes Film Festival at Villa des Oliviers on May 15, 2018 in Cap d'Antibes, France. (Photo by Goff Photos)

An Afghan woman walks with a child in the old city of Herat province, Afghanistan on October 15, 2018. (Photo by Mohammad Ismail/Reuters)

Participants dance during the Water Gun Festival on July 07, 2019 in Seoul, South Korea. Thousands of people enjoyed the annual festival which is being held over the weekend during the scorching heat summer in Korea. (Photo by Chung Sung-Jun/Getty Images)

Women's International Football, England team train for England v France match. Picture shows young footballer Jeannie Allott. Jeannie Alott was England youngest ever female goal scorer. At the age of sixteen years, and one day, she scored in the first official England v Scotland match in Greenock, Scotland on the 18th November 1972. Scotland (2) – England (3) Picture taken 6th November 1974. (Photo by Monte Fresco/Mirrorpix)

South Korean rapper Jennie performs at the Coachella Valley Music and Arts Festival in Indio, California, U.S., April 13, 2025. (Photo by Daniel Cole/Reuters)

Fishermen fill crates with sardines netted during the annual sardine run in Warner Beach, South Africa on June 3, 2025. (Photo by Rogan Ward/Reuters)