Watch the octopus and mantis shrimp go head to head in an underwater battle. ➡ Subscribe: bit.ly/NatGeoWILDSubscribe About Nat Geo Wild: Welcome to a place so wild, anything can happen. Nat Geo Wild is the network all about animals from National Geographic, where every story is an adventure and your imagination is allowed to run wild. Get More Nat Geo Wild: Official Site: bit.ly/NatGeoWILD Facebook: bit.ly/NGWFacebook Twitter: bit.ly/NGWTwitter Instagram: bit.ly/NGWInstagram This Is What Happens When Underwater 'Aliens' Fight | Nat Geo Wild youtu.be/iAYGQ2tqYbM Nat Geo Wild www.youtube.com/user/NatGeoWild