Tsunamis are giant, powerful waves most often caused by earthquakes beneath the ocean floor. Their incredible power can destroy entire communities, then drag the debris out to sea. This video shows what causes tsunamis and the importance of evacuating any area under a tsunami alert. ➡ Subscribe: bit.ly/NatGeoSubscribe ➡ Get More 101 Videos: bit.ly/NatGeo101 About National Geographic’s 101 Series: Explore and experience the forces that shape the world around us. Get More National Geographic: Official Site: bit.ly/NatGeoOfficialSite Facebook: bit.ly/FBNatGeo Twitter: bit.ly/NatGeoTwitter Instagram: 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. Tsunamis 101 | National Geographic youtu.be/_oPb_9gOdn4 National Geographic www.youtube.com/natgeo

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