Scientists "See" Ocean Floor via Sonar | National Geographic

April 21, 2011 — Scientists use cameras and sonar near the U.S. Virgin Islands to "see" the seafloor and find out how fish and other sea life use the underwater habitats, which include coral reefs and sea grasses. ➡ Subscribe: http://bit.ly/NatGeoSubscribe 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. 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 Scientists "See" Ocean Floor via Sonar | National Geographic    • Scientists "See" Ocean Floor via Sonar | N...   National Geographic    / natgeo