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o. The main peak of the volcano, called Kavachi, was not erupting during their expedition, so they were able to drop instruments, including a deep-sea camera, into the crater. The footage revealed hammerheads and silky sharks living inside, seemingly unaffected by the hostile temperatures and acidity. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Watch all clips of Expedition Raw here: http://bit.ly/WatchmoreExpeditionRaw ➡ Get More Expedition Raw on Youtube: http://bit.ly/NGExpeditionRaw #NationalGeographic #UnderwaterVolcano #ExpeditionRaw About Expedition Raw: Surprises, challenges, and amazing behind-the-scenes moments captured by National Geographic explorers in the field. Get More National Geographic: Official Site: http://bit.ly/NatGeoOfficialSite Facebook: http://bit.ly/FBNatGeo Twitter: http://bit.ly/NatGeoTwitter Instagram: http://bit.ly/NatGeoInsta About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible. The National Geographic Society/Waitt Grants Program supported the expedition. Read more about Brennan's research in the Solomon Islands: http://goo.gl/Jpbs52 Join us online to see more from National Geographic Explorers! : Facebook: https://goo.gl/JiPVsU Twitter: https://goo.gl/xeQ3SE PRODUCER/EDITOR: Carolyn Barnwell VIDEOGRAPHER: Alex DeCiccio DROP CAM FOOTAGE: NG Remote Imaging SERIES PRODUCER: Jennifer Shoemaker GRAPHICS: Alex Wenchel Sharks Discovered Inside Underwater Volcano (EXCLUSIVE VIDEO) | Expedition Raw https://youtu.be/0e3t18rrjOA National Geographic https://www.youtube.com/natgeo