Curious Droid's video: How Sonar is revealing the secrets of the sea lakes and rivers

Get NordVPN’s 2 year plan + four months extra for free here: https://nordvpn.com/curiousdroid It's risk-free with Nord's 30-day money-back guarantee! We live on a planet that 70% of is covered in water but if anything falls in to deep water it becomes increasingly difficult to find. However, Sonar technology originally developed to find submarines in wartime is being used to map the seabed and find things that have been lost for years if not decades. This is the story of sonar and how it is now being used to find not only submarines but also anything from WW2 planes to missing persons cold cases. To give one off tips and donations please use the following : https://www.buymeacoffee.com/curiousdroid or paypal.me/curiousdroid https://www.patreon.com/curiousdroid This video is sponsored by https://nordvpn.com/curiousdroid Written, Researched and Presented by Paul Shillito Images and footage: Images and footage : NASA, ESA, ESO, Annelie on Tour, SB C,Chandra X-ray Observatory, caltech, Jade Timelapse SOLVED 21 Year Old Missing Persons Case (Erin Foster & Jeremy Bechtel) https://www.youtube.com/watch?v=AjL4TZse6hs And as always a big thank you also goes out to all our Patreons :-) Eριχθόνιος JL Adriaan von Grobbe Alex K Alipasha Sadri Andrew Gaess Andrew Smith Bengtstromberg Brian Kelly Carl Soderstrom Charles Thacker Collin Copfer Daniel Armer erik ahrsjo Florian Müller George Bishop II Glenn Dickinson inunotaisho Jesse Postier John & Becki Johnston John Zelinka Jonathan Travers Ken Schwarz L D László Antal Lorne Diebel Mark Heslop Matti J Malkia Patrick M Brennan Paul Freed Paul Shutler Peter Engrav Robert Sanges Ryan Emmenegger SHAMIR stefan hufenbach Steve Ehrmann Steve J - LakeCountySpacePort tesaft Tim Alberstein Tyron Muenzer Will Lowe