A new book published by the UK Natural History Museum showcases some of the most memorable underwater photographs taken over the last few decades in its annual wildlife photographer of the year competition. Here: Giant gathering by Tony Wu. “The first indication that something extraordinary was going on were the blows, huge numbers of them – the exhalations of huge numbers of whales. Entering the water, the photographer witnessed an extraordinary scene”. (Photo by Tony Wu/Unforgettable Underwater Photography/NHM)

A person wearing a face mask is reflected in an art work entitled “A=V” by Ben Cullen Williams, amid the coronavirus disease (COVID-19) outbreak, in Covent Garden, London, Britain on October 16, 2020. (Photo by John Sibley/Reuters)

Demonstrators wear skull masks during an anti government protest, as Chile's President Michelle Bachelet delivers a speech inside the National Congress, in Valparaiso city, Chile May 21, 2016. (Photo by Ivan Alvarado/Reuters)

A feminist activist uses a slingshot during a protest against gender violence and patriarchy in Santiago on November 29, 2019. Furious Chileans have since October 18 been protesting social and economic inequality, and against an entrenched political elite that comes from a small number of the wealthiest families in the country, among other issues. (Photo by Javier Torres/AFP Photo)

Tuvalu-registered OS 35 cargo ship lies on the seabed, offshore Gibraltar, Tuesday, August 30, 2022. Gibraltar authorities say they have beached a cargo ship to prevent it from sinking after it collided with a liquefied natural gas carrier in the bay of Gibraltar. (Photo by Europa Press via AP Photo)

Opposition activist Marcelin Myrthil AKA Arab holds a machete during a protest against the government and calls for the resignation of Prime Minister Ariel Henry, in Port-au-Prince, Haiti on February 5, 2024. (Photo by Ralph Tedy Erol/Reuters)

This image released by Paramount Pictures shows American singer Andra Day in “The United States vs Billie Holiday”. Day accepted the award best actress in a motion picture drama at the Golden Globe Awards on Sunday, February 28, 2021. (Photo by Takashi Seida/Paramount Pictures via AP Photo)

A demonstrator is detained during May Day rallies in Santiago May 1, 2013. (Photo by Ivan Alvarado/Reuters)