Why the Deepest Lake on Earth Will Cause a Global Crisis

Want to restore the planet's ecosystems and see your impact in monthly videos? The first 100 people to join Planet Wild with my code NATURE8 will get the first month paid for by me: https://planetwild.com/r/newnature/join/9 If you want to get to know them better first, check out their mission rescuing baby seals: https://planetwild.com/r/newnature/m30/9 No AI was used in the visuals, voice, thumbnail or music in this film. Everything was made by real people: a 3D animator, an illustrator, an editor and Michael on narration. Each episode takes weeks to produce. If you have suggestions for improvements, please let me know your feedback in the comments. -- UPDATE since we finished this film: Reports confirmed 400 hectares in the central ecological zone had already started being cleared, for a five-star tourist complex. -- Lake Baikal is the deepest lake on Earth. It holds around 20% of all the unfrozen fresh water on the planet's surface. And right now, piece by piece, it's being sold off. In this video, we descend through the whole lake, layer by layer, to find out what's actually at the bottom. Ice two metres thick you can drive a truck across. A creature smaller than a grain of rice that filters the entire lake. The only seal on Earth that lives its whole life in fresh water, 2,000km from the nearest ocean. A fish that melts in the sun. And a lake floor where methane freezes into ice that burns when you warm it. Then we get to the part almost nobody is covering. In December 2025, Russia rewrote the law that had protected Baikal since 1999. Next door, China is running short of fresh water and has been drawing pipeline maps to Baikal for years. This is the story of how the oldest, deepest lake in the world quietly went up for sale. Chapters: 0:00 The deepest lake on Earth 0:52 Not a lake, a baby ocean 1:58 The night a village sank 3:35 Ice thick enough to drive on 5:14 What keeps the water clear 6:55 200m: where the seasons stop 8:13 400m: the lake takes a breath 10:16 The seal that shouldn't exist 13:48 800m: the fish that melts 15:29 1,000m: life in the dark 17:23 The bottom: burning ice 19:28 The man who went down 20:22 What Baikal really has 21:01 Why China wants it 22:33 Why Russia is opening it up 25:15 What happens next Sources: UNESCO World Heritage listing for Lake Baikal: the 25-million-year age and the 20% of the world's unfrozen fresh water https://whc.unesco.org/en/list/754/ Roberts et al. (2020), PNAS: how the lake breathes, twice a year, and why the deep water stays oxygenated https://www.pnas.org/doi/10.1073/pnas.2013181117 Yakupova et al. (2023), Genes: the Baikal seal genome, and the still-open question of how it got there https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10048373/ Jackson et al. (2018): the golomyanka, Earth's deepest-swimming freshwater fish, up to 40% lipid https://pmc.ncbi.nlm.nih.gov/articles/PMC5938752/ Granin et al. (2019), Scientific Reports: methane hydrate rising off the lake floor, with photo and video records https://www.nature.com/articles/s41598-019-55758-8 The Moscow Times: Putin signs the logging law, December 2025 https://www.themoscowtimes.com/2025/12/16/putin-signs-controversial-law-allowing-limited-logging-near-lake-baikal-a91451 The Moscow Times: 87 Russian scientists ask him not to sign https://www.themoscowtimes.com/2025/09/09/dozens-of-scientists-write-letter-to-putin-over-baikal-logging-bill-a90466 Subscribe for more science: https://bit.ly/subtonewnature #deepsea #russia #china