Birds are seen at Kizilirmak Bird Paradise in Turkey's Samsun on April 22, 2021. Kizilirmak Delta Bird Sanctuary, which is on the UNESCO World Heritage Tentative List and hosts 359 to 487 species of birds in Turkey, became more active with the arrival of spring. (Photo by Mehmet Kumcagiz/Anadolu Agency via Getty Images)

These friends took a tumble after sharing a hug in Leeds in northern England on May 17, 2021, as Covid-19 lockdown restrictions ease. (Photo by London News Pictures)

Wildlife officials carry away the carcass of a turtle that was washed ashore at the beach of Angulana, south of Sri Lanka's capital Colombo on June 24, 2021. (Photo by Ishara S. Kodikara/AFP Photo)

Fans of Croatia are seen during the UEFA Euro 2020 Championship Round of 16 match between Croatia and Spain at Parken Stadium on June 28, 2021 in Copenhagen, Denmark. (Photo by Antonio Bronic/Reuters)

USA's Jourdan Elizabeth Delacruz reacts as she competes in the women's 49kg weightlifting competition during the Tokyo 2020 Olympic Games at the Tokyo International Forum in Tokyo on July 24, 2021. (Photo by Edgard Garrido/Reuters)

Riders from Netherland and Belgium crashes in the women's track cycling madison final during the Tokyo 2020 Olympic Games at Izu Velodrome in Izu, Japan, on August 6, 2021. (Photo by Matthew Childs/Reuters)

A Shi'ite Muslim woman bleeds after she was cut on the forehead with a razor during a religious procession to mark Ashura in Nabatieh, southern Lebanon on August 19, 2021. (Photo by Aziz Taher/Reuters)

“Secrets of the Whales”. Skerry’s photographs celebrate the lives and culture of whales, illuminating recent research and their diverse behaviours. His latest work focuses on four key species: sperm whales, humpbacks, orca and beluga whales. Humpback whales bubble-net feeding off the coast of Alaska. They work cooperatively to feed on herring by blowing a perfect ring of bubbles underwater to form a net encircling the fish. The whales then swim up through the centre of the bubble net with their mouths open. (Photo by Brian Skerry/National Geographic Photo/Visa pour l'Image)