Why Sharks Get Creepier the Deeper You Go

The farther you sink into the ocean, the more sharks start to feel alien. This video breaks down how pressure, darkness, and evolution turn familiar predators into bizarre deep sea creatures.

Image credits:

By © Citron, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...
By © Citron, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...
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By saname777 from Tokyo, Japan - Shin-Enoshima Aquarium(2008.8.23) - 189, CC BY 2.0, https://commons.wikimedia.org/w/index...
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By Dianne Bray / Museum Victoria - http://www.fishesofaustralia.net.au/h..., CC BY 3.0 au, https://commons.wikimedia.org/w/index...
By Dianne Bray / Museum Victoria - http://www.fishesofaustralia.net.au/h..., CC BY 3.0 au, https://commons.wikimedia.org/w/index...
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By Miyazaki Y, Teramura A, Senou H (2019) Preliminary report on bycatch fish species collected from the Tokyo Submarine Canyon, Japan. ZooKeys 843: 129-147. https://doi.org/10.3897/zookeys.843.3... - https://zookeys.pensoft.net/article/3... (license), CC BY 4.0, https://commons.wikimedia.org/w/index.... Edited.
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By Emőke Dénes - kindly granted by the author, CC BY-SA 4.0, https://commons.wikimedia.org/w/index...
By NOAA Photo Library - https://www.flickr.com/photos/noaapho..., CC BY 2.0, https://commons.wikimedia.org/w/index... JSUBiology - https://www.flickr.com/photos/8715208..., CC BY 2.0, https://commons.wikimedia.org/w/index... Avenue - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...
By Jerry Kirkhart - https://www.flickr.com/photos/jkirkha..., CC BY 2.0, https://commons.wikimedia.org/w/index... Hugues Evano (IFREMER, Délégation océan Indien (DOI), Département Ressources Biologiques et Environnement (RBE), F-97420 Le Port, France) - Squalelet féroce (Isistius brasiliensis), CC BY 4.0, https://commons.wikimedia.org/w/index...
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By Super Bomba from bklyn / syd - shark, 1960, CC BY-SA 2.0, https://commons.wikimedia.org/w/index...
By Julian Idrobo - Flickr: Arctic Jaws, CC BY 2.0, https://commons.wikimedia.org/w/index...
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