May Matthews (left) and Romy Clark from Bonhams Edinburgh carry a carved wooden model of an Atlantic Salmon by Rogers Brookes (estimate £1,500-2,000) during a photo call for the upcoming Home and Interiors sale, and Sporting and Wildlife sale, at Bonhams, Edinburgh, on September 16, 2020. (Photo by Jane Barlow/PA Images via Getty Images)

Police officers in action during the eviction of the “Liebig 34” squat, at Friedrichshain district in Berlin, Germany, 09 October 2020. A local court ruled in favor of the eviction of the self-declared “anarcha-queer feminist” house project at Liebig street 34 in June 2020. The house project is considered a stronghold of the left-wing scene in the German capital. (Photo by Filip Singer/EPA/EFE)

Jude Hajjaj, carries her cat near a picture of her cat painted on the wall by her father Osama Hajjaj, who teams up with his neighbours in creating works of art at their roof during the curfew imposed by the Jordanian government amid concerns over the spread of the coronavirus disease (COVID-19) in Amman, Jordan, May 10, 2020. (Photo by Muhammad Hamed/Reuters)

A woman wearing a protective face mask walks past a graffiti, after authorities eased lockdown restrictions that were imposed to slow the spread of the coronavirus disease (COVID-19), in Mumbai, India, June 12, 2020. (Photo by Hemanshi Kamani/Reuters)

The sun begins to set over this rusty beachside mansion that has been left abandoned for more than 25 years in Thailand, June 2017. A deserted beachside mansion in southern Thailand has retained its beauty – despite no one living there for more than 25 years. In June this year abandoned photographer, Dax Ward, ventured to the Prachuap Khiri-Khan Province to capture the haunting attraction on camera. (Photo by Dax Ward/Barcroft Images)

An H-2A rocket carrying Japan's fourth and final quasi-zenith satellite, the Michibiki No. 4, lifts off from the Tanegashima Space Center in Kagoshima Prefecture, southwestern Japan in this photo taken by Kyodo on October 10, 2017. (Photo by Reuters/Kyodo News)

A Boeing 777-300 from Swiss International Airlines lands on a foggy morning at Zurich Airport, on Friday, October 13, 2017, in Zurich, Switzerland. The high humidity renders the air vortex visible. (Photo by Christian Merz/Keystone via AP 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)