What If Every Ocean on Earth Vanished for a Year?

You are standing barefoot on a beach, and the wave in front of you does not come back. Every ocean on Earth has just vanished: 1.3 billion cubic kilometers of water, gone for exactly one year. Most people think of the sea as scenery. It is the planet's heater, its air conditioner, its rain machine and its largest home for life. We follow the year hour by hour and month by month: the ships that fall, the new map of the world, the salt storms, the day the rain stops, the planet that burns by day and freezes by night, and the first expeditions down to a sea floor no human has ever walked on. Then the water returns, and we find out what cannot come back with it. How far do you live from the sea? Tell us in the comments, and whether you would have walked out onto the sea floor. Next on Hour Zero: What if nobody on Earth could sleep for a month? 0:00 The wave that does not come back 1:12 Hour 1: the edge 3:04 Day 1: the new map 4:51 Week 1: the salt and the smell 6:40 Month 1: the rain stops 8:46 Month 3: fire and ice 10:46 Month 6: the hungry planet 12:33 The deep: what we find 14:30 Month 12: the water returns 15:47 Could it really happen? 17:33 The real lesson Sources: NOAA Ocean Facts; NASA Earth Observatory, The Water Cycle; FAO, The State of World Fisheries and Aquaculture 2024; UNCTAD Review of Maritime Transport 2024; IPCC Sixth Assessment Report; USGS Water Science School; United Nations Ocean factsheet; Garcia-Castellanos et al. 2009 (Nature) on the Zanclean flood. The scenario itself is a thought experiment. Footage and photos: Wikimedia Commons, public domain and CC0 only (NOAA, NASA, U.S. National Park Service, Bureau of Land Management and other U.S. government sources; Unsplash and Commons contributors under CC0). AI disclosure: the narration is AI-assisted.