"Sea Monsters: A Prehistoric Adventure" follows a dolichorhynchops as she travels through the most dangerous oceans in history. See more Sea Monsters! http://video.nationalgeographic.com/video/player/specials/films-specials/sea-monsters/sea-monsters-1.html?source=4001 ➡ 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 Sea Monsters | National Geographic https://youtu.be/hEfQKSpONX8 National Geographic https://www.youtube.com/natgeo