What are coral reefs? Coral can be found in tropical ocean waters around the world. But how much do you know about reefs and the tiny animals—polyps—that build them? Learn all about coral and why warming waters threaten the future of the reef ecosystem.
➡ 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

Read more about Corals here:

Coral Reefs 101 | National Geographic

National Geographic



  1. These British(now working from America) Scientists must not be allowed to perform their so called research. They are destroying all Equatorial parts of the world, after stealing all the genes to create Hybrids and Genetically Modified varieties to have control over everything unlike God's creation.

  2. they laugh after they do that.they understand its abusive to dog. and sells person of dogs sells them to criminals for US dollars. and after they sell the dogs they even hang out(criminal slang) with the criminals at their location and buy and sell drugs to them and smoking drugs all together laughing. its e legal crime. they must get arrested because next sell it will be your child . arrest them. they will do anything for drugs they will sell your Childs organs , without any human civilization care.

  3. those who smoke weed and opium in baby dogs face must get arrested and punished . its horrible pain for baby dog to inhale drugs, it is not only abusive , it is against earth laws of life. arrest them.

  4. some toxins healthy released in biology sanitizing the planet and live organisms. determination process is dangerous to consume , nerve and brain system paralyzing plants and heluzinators is also very damaging the earth, if consumed by biological species not correctly , if not synchronized with biology. . that is price drug dealers will have to pay .punish them.


Please enter your comment!
Please enter your name here