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)

Camel racing made its debut in Paxford, Gloucestershire, England yesterday at a point-to-point event on April 22, 2019. Each of the four camels was sponsored by a local pub. (Photo by Paul Nicholls/The Times)

A Nihang Sikh, belonging to the Sikh warrior clan, performs Gatka, a form of Sikh martial arts, during a religious procession marking the 350th martyrdom anniversary of Guru Tegh Bahadur Ji in New Delhi, India, 25 November 2025. The procession commemorates the martyrdom of the 9th Sikh Guru, Sri Guru Tegh Bahadur Ji, who was executed in 1675 AD for refusing to convert to Islam on the orders of Mughal Emperor Aurangzeb. The event is observed at Gurudwara Sis Ganj in Delhi. Guru Tegh Bahadur, the youngest of the five sons of Guru Hargobind, was born in Amritsar in 1621. (Photo by Rajat Gupta/EPA)

People take part in the annual Easter Parade and Bonnet Festival along 5th Avenue in New York City March 27, 2016. The parade, which is more of a stroll than a parade, is more informal than the city's other parades. There are no bands, no floats, and no formations, and anyone can participate. (Photo by Brendan McDermid/Reuters)

Parade goers draped in American flags walk down the street before a Fourth of July parade begins Saturday, July 4, 2020, in Bristol, R.I. The town, which lays claim to the nation's oldest Independence Day celebration in the country, held a vehicle-only scaled down version of its annual parade Saturday due to the coronavirus pandemic. (Photo by David Goldman/AP Photo)

Female members of the PDI (Investigations Police of Chile) march during the traditional military parade as part of the independence day celebrations on September 19, 2021 in Santiago, Chile. This year the militar parade was celebrated with 30% of the staff present in pre-pandemic years. About 6,500 members of the Army, Navy, Air Force, Carabineros and PDI paraded. (Photo by Matias Basualdo/ZUMA Press Wire/Rex Features/Shutterstock)

People take part in the in the 41st annual Gay and Lesbian Mardi Gras parade in Sydney, New South Wales, Australia, 02 March 2019. The 41st parade features almost 200 floats. (Photo by Steven Saphore/EPA/EFE)

Russian honor guard soldiers warm up prior a rehearsal for the Victory Day military parade in St. Petersburg, Russia, Wednesday, May 3, 2017. The parade will take place at Dvortsovaya (Palace) Square on May 9, to celebrate 72 years after the victory in WWII. (Photo by Dmitri Lovetsky/AP Photo)