Runner-up; Hon Yen marine ecosystem. Phu Yen, Vietnam. Every year between May and August, the coral of this rich and diverse ecosystem becomes exposed at low tide. (Photo by Truong Hoai Vu/Royal Society of Biology Photography Competition)

A woman struggles to drink homemade alcohol poured from the mouth of an idol of “Swet Bhairab” during the annual Indra Jatra festival to worship Indra, Kumari and other deities and to mark the end of monsoon season in Kathmandu, Nepal on September 15, 2019. (Photo by Monika Deupala/Reuters)

A misty start to the day in the New Forest with ponies running near Ringwood in Hampshire, UK on Saturday, October 6, 2024. (Photo by Steve Hogan/Picture Exclusive)

A group of women take photos of a giant donut installation outside the Maddox Gallery in Mayfair, London on Thursday June 24, 2021, to celebrate a new exhibition entitled Villainy, a body of work by an anonymous street artist from New York who operates under the alias, “Jerkface”. (Photo by Yui Mok/PA Wire Press Association)

A dancer spits fire during a slum party at Oworonshoki district of Lagos, on November 27, 2021. In Oworonshoki, a poor district of Lagos, Nigeria's economic capital, an emerging artistic dance activists, Ennovate Dance House, is changing the narratives of the slum cummunity. The community which in the past was always in the bad news for cultism, violence and killings, suddenly is attracting tourist attention with a “Slum Party”, a yearly artistic dance festival being used by the group to give life and hope to the inhabitants. (Photo by Pius Utomi Ekpei/AFP Photo)

A male stag beetle walks on a branch in an oak forest near the Spree River in Kersdorf, Brandenburg, Germany, on June 8, 2025. (Photo by Patrick Pleul/picture alliance via Getty Images)

Lake Baikal is the world's oldest lake, at 25 million years (possibly older), and deepest, averaging 744.4 metres (2,442 ft).

Located in the south of the Russian region of Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, it is the most voluminous freshwater lake in the world, containing roughly 20% of the world's unfrozen surface fresh water.