A man watches a wave hit a rock pool at Curl Curl beach as large swell hits the East Coast of Australia on June 6, 2016 in Sydney, Australia. Torrential rain over the weekend saw streets and homes flooded while wind gusts up to 120km per hour brought down trees and powerlines. A king tide has also seen beachside homes evacuated on Sydney's northern beaches as large waves erode the coast. (Photo by Cameron Spencer/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.

A four-month-old snow fox cub named “Vesna” (“Spring”) leaps next to a Zoo employee at the Royev Ruchey Zoo in Krasnoyarsk, Russia, on August 6, 2013. (Photo by Ilya Naymushin/Reuters)

Peasants celebrate a traditional festival “Corpus Cristhi” since the time of the conquest, in Anolaima in the department of Cundinamarca, Colombia on June 29, 2022. Peasants collect all kinds of fruits and assemble great representative figures in gratitude to God for this festival. (Photo by Yair Suarez/Anadolu Agency via Getty Images)

Canoeists are framed by the tail of a breaching whale in Antarctica in April 2023. The photographer, from California, writes: “It was probably a once-in-a-lifetime moment”. (Photo by Jiahong Zeng/Solent News)

Female dancers line up before they perform during the opening of Bali Arts Festival in Bali, Indonesia, Sunday, June 18, 2023. The island of Bali is currently holding a month-long annual Bali Arts Festival from June 18 until July 16. (Photo by Firdia Lisnawati/AP Photo)

Staff take no chances at a dog-grooming salon in Rotterdam in the second decade of June 2023. (Photo by RUT/Splash News and Pictures)

A man smokes a water pipe sitting on a bench with his pet parrot at the Ain al Mreisseh seaside promenade in Beirut on June 28, 2024. (Photo by Joseph Eid/AFP Photo)