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What Happens If All The Coral Dies?

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Jan 22nd, 2017
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  3. Hey there and welcome to Life Noggin.
  4.  
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  7. Have you ever wondered if Atlantis is real?
  8.  
  9. 3
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  11. Is there really a lost city in the sea?
  12.  
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  15. Well, if it does exist, we haven't found it
  16. yet...but there are underwater cities filled
  17.  
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  20. with beautiful fish, lively vegetation and
  21. wondrous sea creatures!
  22.  
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  25. They’re called coral reefs and they are
  26. extremely important.
  27.  
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  30. Let’s explore these amazing ecosystems and
  31. learn why we need to protect them!
  32.  
  33. 8
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  35. Milo Thatch would be proud.
  36.  
  37. 9
  38. 00:00:25,169 --> 00:00:26,169
  39. So just what exactly are coral reefs?
  40.  
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  43. Called the “rainforests of the sea”, coral
  44. reefs are slowly formed when coral polyps
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  48. secrete a calcium carbonate skeleton, which
  49. protects the coral from predators and gives
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  53. other coral polyps a place to attach themselves.
  54.  
  55. 13
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  57. The largest coral reef is the Great Barrier
  58. Reef, which spans over 2,600 kilometers and
  59.  
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  62. has been growing for about 20,000 years!
  63.  
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  66. The reefs are some of the most diverse ecosystems
  67. on Earth and home to countless sea creatures
  68.  
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  71. from tropical fish to sea cucumbers to dolphins.
  72.  
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  75. Scientists even predict there could be millions
  76. of undiscovered species of organisms living
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  80. in and around the reefs.
  81.  
  82. 19
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  84. Not to mention, without them, we wouldn’t
  85. have had those awesome adventures with Nemo
  86.  
  87. 20
  88. 00:01:05,480 --> 00:01:06,480
  89. and Dory!
  90.  
  91. 21
  92. 00:01:06,480 --> 00:01:08,290
  93. So why are they so important?
  94.  
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  97. Besides their awesome aquatic life, coral
  98. reefs play a big role in protecting shorelines
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  102. around the world from coastal storms and erosion.
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  106. Parts of the reef even act as natural water
  107. filtration systems.
  108.  
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  111. Through fisheries, the reefs provide many
  112. people with an important source of protein
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  116. and nutrition, especially in developing countries.
  117.  
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  120. This also makes them extremely important economically,
  121. even more when considering tourism of the
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  125. reefs are great stimulants of their local
  126. economies.
  127.  
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  130. Experts estimate that coral reefs are worth
  131. hundreds of billions of dollars!
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  135. Due to their vast biodiversity, coral reefs
  136. also have the potential to lead to countless
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  140. life-saving advancements in medicine, possibly
  141. helping us find better treatments or cures
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  145. for things like arthritis, viruses, or even
  146. cancer.
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  150. Who needs Atlantis when coral reefs are so
  151. amazing!
  152.  
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  155. But coral reefs around the globe are in danger.
  156.  
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  159. They’re fragile ecosystems that are very
  160. sensitive to the increasing water temperatures
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  164. from climate change.
  165.  
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  168. As greenhouse gases warm the atmosphere, the
  169. temperatures of the sea also increase, which
  170.  
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  173. leads to coral bleaching.
  174.  
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  177. This is an unfortunate phenomenon where the
  178. coral lose their symbiotic algae that produce
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  182. the food the coral need to survive.
  183.  
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  186. This can leave the coral reefs vulnerable
  187. to other threats and diseases and even kill
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  191. the coral colonies from starvation.
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  195. The reefs can sometimes recover from short-term
  196. bleaching, but prolonged bleaching can lead
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  200. to irreversible damage and death.
  201.  
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  204. Increasing carbon dioxide also alters the
  205. chemistry of the ocean and leads to ocean
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  209. acidification, where the more acidic water
  210. slows coral growth rates and weakens their
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  214. skeletons.
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  218. Coral reefs also face many other threats including
  219. pollution, overfishing, and overharvesting
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  223. coral.
  224.  
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  227. It’s estimated that if left unchecked, over
  228. 90% of all coral reefs will be severely threatened
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  232. by 2030, with almost all of them being in
  233. great danger by 2050.
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  237. Come on friends, we have to save Atlantis!
  238.  
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  241. Protecting coral reefs is just one of the
  242. many reasons we should all help fight global
  243.  
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  246. warming.
  247.  
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  250. Share this video with your friends so we can
  251. help out our ocean buddies!
  252.  
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  255. Let me know in the comment section below what’s
  256. your favorite part about coral reefs.
  257.  
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  260. Make sure you come back every Monday for a
  261. brand new video.
  262.  
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  265. As always, I’m Blocko and this has been
  266. Life Noggin.
  267.  
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  270. Don’t forget to keep on thinking!
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