Today I Found Out

How and Why Do Oysters Make Pearls? (2016x92)

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→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 →How "Dick" came to be short for 'Richard': https://youtu.be/BH1NAwwKtcg?list=PLR0XuDegDqP2Acy6g9Ta7hzC0Rr3RDS6q Never run out of things to say at the water cooler with TodayIFoundOut! Brand new videos 7 days a week! More from TodayIFoundOut Why a Bakers Dozen is 13 Instead of 12 https://youtu.be/UPDV0POS5d0?list=PLR0XuDegDqP3XRa-w_G0dy_aMMXj0Uq-k Why Vampires Can't Exist... and 9 Other Amazing Facts https://youtu.be/cDlat4Pdd4U?list=PLR0XuDegDqP1IHZBUZvKkPwkTr6Gr0OBO In this video: Oysters make pearls as a defensive response to foreign objects. The process begins when some foreign body, such as sand, a parasite or some other organic material, manages to make its way inside the oyster’s shell and comes in contact with the mantle, a layer that protects the oyster’s internal organs, sometimes even damaging it. Want the text version?: http://www.todayifoundout.com/index.php/2016/01/oysters-make-pearls/ Sources: http://www.livescience.com/32289-how-do-oysters-make-pearls.html http://humantouchofchemistry.com/how-do-oysters-make-pearls.htm http://www.americanpearl.com/historyoyster.html http://www.pearls.com/pages/how-pearls-are-formed http://www.karipearls.com/how-are-pearls-made.html http://www.popsci.com/science/article/2013-06/why-are-pearls-round http://www.bbc.com/future/story/20130623-how-pearls-get-their-round-shape http://www.thepearlmarket.co.uk/pearl-formation.htm http://www.honora.com/blog/cultured-pearls/natural-vs-cultured-pearls/ https://en.wikipedia.org/wiki/Pearl#Physical_properties