A model presents a creation by Indian designer Monisha Jaising during the grand finale of Lakme Fashion Week (LFW) Winter/Festive 2018, in Mumbai, India, 26 August 2018. (Photo by Divyakant Solanki/EPA/EFE)

Indian Air Force officers stretch before taking part in full dress rehearsal for India's Republic Day parade in Kolkata, January 23, 2018. (Photo by Rupak De Chowdhuri/Reuters)

With daughter Malti at home, Indian actress Priyanka Chopra and American singer-songwriter Nick Jonas make the most of date night on April 01, 2023 in Mumbai, India. (Photo priyanka chopra/Instagram)

A young child dressed as the Hindu deity Shiva looks at a cow while waiting for alms from pilgrims in Pushkar in the western Indian state of Rajasthan on October 24, 2019. (Photo by Himanshu Sharma/AFP Photo)

A model presents a creation by Indian designer Amit Aggarwal during the FDCI India Couture Week in New Delhi on July 28, 2024. (Photo by Sajjad Hussain/AFP Photo)

An Indian soldier blows fire as he performs an acrobatic manoeuvre known as 'Mallakhamb' during an event in Jaipur on December 5, 2024. (Photo by Himanshu Sharma/AFP Photo)

A wild elephant eats garbage containing plastic waste at a dump in Sri Lanka's eastern district of Ampara on June 3, 2023. Sri Lanka is set to launch a nation-wide clean up of plastic waste ahead of new laws banning the sale of single use plastics, the Environmental ministry said, after a spate of deaths of elephants and deer in the island's northeast after foraging at open garbage tips filled with plastic waste, whilst shrinking habitat has led to jumbos raiding villages looking for food. (Photo by Ishara S. Kodikara/AFP Photo)

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)