REFERENCES
The images shown on this website were provided by Wikipedia Commons.
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1.http://www.onegreenplanet.org/animalsandnature/orcas-killer-whales-captivity/
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2.http://www.seaworldofhurt.com/features/ten-things-didnt-know-seaworld/
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3.http://commons.wikimedia.org/wiki/File:Orcinus_orca_how_in_kamogawa_sea_world.jpg
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4.http://www.earthintransition.org/2013/09/shamus-exercise-machine/
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6.http://commons.wikimedia.org/wiki/File:Orca_lofoten.jpg
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8. http://www.takepart.com/photos/7-reasons-orcas-and-captivity-dont-mix
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9.http://www.tattootribes.com/multimedia/88/killer-whale-tattoo-B.jpg
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Slideshow http://commons.wikimedia.org/wiki/File:Killer_Whale_Family.jpg
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Slideshow http://commons.wikimedia.org/wiki/File:Killer_Whale_at_Marineland.jpg
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Slideshow http://commons.wikimedia.org/wiki/File:Killer_Whale_Tipe_B.jpg
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Slideshow http://commons.wikimedia.org/wiki/File:Orcinus_orca_tail_slapping_(Vestfjord,_2012).jpg
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Slideshow http://commons.wikimedia.org/wiki/File:Male_killer_whale_orcinus_orca.jpg
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Background: http://commons.wikimedia.org/wiki/File:JumpingOrca.jpg
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Background http://commons.wikimedia.org/wiki/File:Orcinus_orca_tail_slapping_(Vestfjord,_2012).jpg
Here are some websites you can look for more information about orcas in captivity.