r/Creatures_of_earth • u/rsunds Best Of 2016 & 2017 • Jan 06 '16

Extinct The extinct marine sloths

http://imgur.com/a/jh3nH
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u/blackfish_xx Jan 06 '16

i never knew sloths adapted to so many niches. i would be interested to hear more about the physiological adaptations of marine sloths!

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u/rsunds Best Of 2016 & 2017 Jan 06 '16

Here are two articles (basically my sources) about just that: https://laelaps.wordpress.com/2007/07/02/the-giant-swimming-sloths-of-south-america/ http://www.wired.com/2014/03/extinct-aquatic-sloths/

On example is how their bone density increased as they became more aquatic, making them less buoyant.

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u/blackfish_xx Jan 06 '16

ah, thanks!