In the ultimate example of sibling rivalry, only the strongest sand tiger sharks will survive in the womb.
Learn more about Sand Tiger Sharks: http://animals.nationalgeographic.com/animals/fish/sand-tiger-shark/
WATCH: How “Glowing” Sharks See Each Other
➡ 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
Did You Know Sand Tiger Sharks Cannibalize Each Other in the Womb? | National Geographic
National Geographic
https://www.youtube.com/natgeo