Some species Sharks are so ferocious that they’ll eat each other in the womb! But what sounds viscous is actually a survival trait shared by other species.
Hosted by: Hank Green
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Sharks
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3645029/
Salamanders
https://onlinelibrary.wiley.com/doi/epdf/10.1002/%28SICI%291097-010X%28199811/12%29282%3A4/5%3C507%3A%3AAID-JEZ7%3E3.0.CO%3B2-0
https://core.ac.uk/download/pdf/36141363.pdf
Insects
https://link.springer.com/article/10.1007/s00114-006-0213-z
https://academic.oup.com/jinsectscience/article/4/1/36/888438
Humans
https://scholar.archive.org/work/r44qzqnuzvgkni743javxu2feu/access/wayback/https://www.cambridge.org/core/services/aop-cambridge-core/content/view/0D4FC2D88128621DE0A28CA9A1653190/S0001566000008278a.pdf/div-class-title-the-vanishing-twin-div.pdf
IMAGES
https://www.gettyimages.com/detail/photo/fire-salamander-royalty-free-image/528101891
https://commons.wikimedia.org/wiki/File:Carcharias_taurus_newport.jpg
https://commons.wikimedia.org/wiki/File:A_massive_Sand_tiger_Shark_swims_by_(27287498303).jpg
https://www.gettyimages.com/detail/video/marble-ray-at-giant-undersea-canyon-ogasawara-japan-stock-footage/1162378258?phrase=underwater%20sand%20ocean&adppopup=true
https://commons.wikimedia.org/wiki/File:Salamandra_salamandra_BM3.jpg
https://www.gettyimages.com/detail/photo/fire-salamander-royalty-free-image/172882837?phrase=fire%20salamander&adppopup=true
https://www.gettyimages.com/detail/photo/closeup-on-a-dark-larvae-hokkaido-salamander-royalty-free-image/1421229192?phrase=salamander%20larva&adppopup=true
https://www.inaturalist.org/observations/93044997
https://www.inaturalist.org/observations/32993131
https://academic.oup.com/jinsectscience/article/4/1/36/888438
https://commons.wikimedia.org/wiki/File:The_Sand_Tiger_Shark_with_Sea_Turtle.jpg
https://commons.wikimedia.org/wiki/File:Salamandra_salamandra_01_by-dpc.jpg
https://www.gettyimages.com/detail/photo/cropped-shot-of-an-unrecognizable-mother-to-be-royalty-free-image/1368416956?phrase=pregnant&adppopup=true
Hosted by: Hank Green
SciShow is on TikTok! Check us out at https://www.tiktok.com/@scishow
----------
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:
Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás Lagos González, Jacob, Christoph Schwanke, Sam Lutfi, Bryan Cloer
----------
Looking for SciShow elsewhere on the internet?
SciShow Tangents Podcast: https://scishow-tangents.simplecast.com/
Facebook: http://www.facebook.com/scishow
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Instagram: http://instagram.com/thescishow
#SciShow #science #education
----------
Sharks
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3645029/
Salamanders
https://onlinelibrary.wiley.com/doi/epdf/10.1002/%28SICI%291097-010X%28199811/12%29282%3A4/5%3C507%3A%3AAID-JEZ7%3E3.0.CO%3B2-0
https://core.ac.uk/download/pdf/36141363.pdf
Insects
https://link.springer.com/article/10.1007/s00114-006-0213-z
https://academic.oup.com/jinsectscience/article/4/1/36/888438
Humans
https://scholar.archive.org/work/r44qzqnuzvgkni743javxu2feu/access/wayback/https://www.cambridge.org/core/services/aop-cambridge-core/content/view/0D4FC2D88128621DE0A28CA9A1653190/S0001566000008278a.pdf/div-class-title-the-vanishing-twin-div.pdf
IMAGES
https://www.gettyimages.com/detail/photo/fire-salamander-royalty-free-image/528101891
https://commons.wikimedia.org/wiki/File:Carcharias_taurus_newport.jpg
https://commons.wikimedia.org/wiki/File:A_massive_Sand_tiger_Shark_swims_by_(27287498303).jpg
https://www.gettyimages.com/detail/video/marble-ray-at-giant-undersea-canyon-ogasawara-japan-stock-footage/1162378258?phrase=underwater%20sand%20ocean&adppopup=true
https://commons.wikimedia.org/wiki/File:Salamandra_salamandra_BM3.jpg
https://www.gettyimages.com/detail/photo/fire-salamander-royalty-free-image/172882837?phrase=fire%20salamander&adppopup=true
https://www.gettyimages.com/detail/photo/closeup-on-a-dark-larvae-hokkaido-salamander-royalty-free-image/1421229192?phrase=salamander%20larva&adppopup=true
https://www.inaturalist.org/observations/93044997
https://www.inaturalist.org/observations/32993131
https://academic.oup.com/jinsectscience/article/4/1/36/888438
https://commons.wikimedia.org/wiki/File:The_Sand_Tiger_Shark_with_Sea_Turtle.jpg
https://commons.wikimedia.org/wiki/File:Salamandra_salamandra_01_by-dpc.jpg
https://www.gettyimages.com/detail/photo/cropped-shot-of-an-unrecognizable-mother-to-be-royalty-free-image/1368416956?phrase=pregnant&adppopup=true
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- Documentary
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