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)

Indian army training cadets perform “Kalaripayattu”, an ancient martial art from Kerala, during a combined display ahead of their graduation ceremony, at the Officers Training Academy (OTA), in Chennai, India on September 8, 2023. A combined display of training proficiency was organized at the OTA as a prelude to a passing-out parade of cadets. The combined display marks the culmination of the adventure training and showcases the skills and expertise of armed forces display teams. (Photo by Idrees Mohammed/EPA/EFE)

People protest for greater action against climate change during the People's Climate March on September 21, 2014 in New York City. The march, which calls for drastic political and economic changes to slow global warming, has been organized by a coalition of unions, activists, politicians and scientists. (Photo by Andrew Burton/Getty Images)

A store mannequin with a protective mask stands before a clothes store as they open for the first time since March during the novel coronavirus (COVID-19) pandemic on April 22, 2020 in Berlin, Germany. Small to midsized-shops are opening across Germany this week as state authorities follow a recommendation by the federal government to ease restrictions imposed in March meant to slow the spread of the coronavirus. Some schools are also planning to reopen soon, as are museums and hair salons in coming weeks. (Photo by Maja Hitij/Getty Images)

Chris Renshaw has recently been awarded the 2015 Africa Geographic “Photographer of the Year” award. Chris tells that his love “for anything wild and adventurous came from a deep rooted attachment to the African continent. This image shows that timing, a bit of anticipation, and luck allowed this incredible moment in time to be captured”. (Photo by Chris Renshaw)

Workers use the traditional craft of picking waterlilies by hand arranging them into fascinating shapes in Bogor, Indonesia in October 2022. After the waterlilies are harvested and cleaned, they will be sold in the market and are usually used for decoration and bouquets. (Photo by Gatot Herliyanto/Solent News & Photo Agency)

A model displays a creation by designers members of the Carabobo Sostenible program who present a collection made of corn cob husks, plastic, and paper in front of the facade of the Virgen del Carmen church in the town of Mariara, Carabobo state, Venezuela, on August 3, 2023. (Photo by Juan Carlos Hernandez/AFP Photo)

A visitor stands near an art installation portraying China's President Xi Jinping, U.S. President Donald Trump and Russia's President Vladimir Putin during the ARTSUBS exhibition in Surabaya, Indonesia on August 2, 2025. (Photo by Juni Kriswanto/AFP Photo)