Teeming with images of spectacular underwater scenes from around the world, Call of the Blue is the culmination of a five-year project by the photographer and ocean conservationist Philip Hamilton. This groundbreaking book includes contributions from acclaimed scientists and ocean “guardians”, who reveal what drove them to answer the call of the blue. (Photo by Philip Hamilton/The Guardian)

People on inflatable boats enjoy the weather on the Lake Lucerne in Sisikon, Switzerland, August 5, 2018. (Photo by Denis Balibouse/Reuters)

People look at a Christmas tree decorated with colourful lights at a residential compound in Beijing on December 8, 2017. (Photo by Nicolas Asfouri/AFP Photo)

A drone photo shows fall folaige wih tones of yellow, red and brown colors of Uludag Mountain, one of the most significant winter tourism destination of Turkey, on November 29, 2020 in Bursa, Turkey. (Photo by Sergen Sezgin/Anadolu Agency via Getty Images)

Female body builders flex their muscles as they compete in the 2nd Women Sports Model contest in Guwahati on April 2, 2023. (Photo by Biju Boro/AFP Photo)

Nico Martin with a Mini Electric wrapped in thousands of Christmas fairy lights, at Greenfield Farm in Christmas Common, Oxfordshire on November 9, 2021. Nico, from Bracknell in Berkshire, has wrapped his own Mini in lights for the last two years, raising money for the MS Trust and for Duchenne UK. This year Mini are supporting Nico, providing him with a Mini Electric wrapped in thousands of Christmas lights ready for him to take out on the road. (Photo by Jacob King/PA Images via Getty Images)

Police in Stanley, the Falklands capital, had to temporarily close a road after a pair of sea lions picked an awkward spot to get frisky on Sunday, December 5, 2021. (Photo by Genti Cena Photography/Triangle)

A blue crab, a highly invasive alien species, is seen at Lio Piccolo during the reforestation day on April 05, 2025 in Venice, Italy. The island of Lio Piccolo in the northern lagoon of Venice is being replanted with 16,000 new trees that will protect the salt marsh ecosystem that is fundamental to the natural health of Venice and the lagoon by WOWnature project, an Etifor initiative. (Photo by Simone Padovani/Getty Images)