Why Do Sea Urchins Wear Hats?

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You might have noticed that sea urchins sometimes make some interesting fashion choices, covering themselves with all sorts of odds and ends, and it turns out they have a lot of different reasons for doing this.

Hosted by: Stefan Chin

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Sources:
https://www.gettyimages.com/detail/photo/sand-pattern-royalty-free-image/1397026160?adppopup=true
https://www.gettyimages.com/detail/illustration/sea-urchin-vector-royalty-free-illustration/1317285449
https://www.gettyimages.com/detail/video/two-videos-of-caustic-waving-water-in-real-slow-motion-stock-footage/635813684?adppopup=true
https://www.gettyimages.com/detail/photo/closeup-of-a-pacific-red-pincushion-urchin-popular-royalty-free-image/1187423329?adppopup=true
https://www.gettyimages.com/detail/photo/california-red-sea-urchin-royalty-free-image/149125297?adppopup=true
https://www.flickr.com/photos/49399018@N00/41935496465
https://www.shutterstock.com/image-photo/blue-tuxedo-urchin-mespilia-globulus-1250265103
https://www.thingiverse.com/thing:14698
https://www.inaturalist.org/observations/31993397
https://www.inaturalist.org/observations/81596554
https://www.inaturalist.org/observations/104489881
https://www.inaturalist.org/observations/118112641
https://www.inaturalist.org/observations/118126852
https://commons.wikimedia.org/wiki/File:Sea_urchins,_Sterechinus_neumayeri.jpg
https://commons.wikimedia.org/wiki/File:Underwater_mcmurdo_sound.jpg
https://www.inaturalist.org/observations/36829739
https://www.inaturalist.org/observations/33165902
https://www.inaturalist.org/observations/20329294
https://www.inaturalist.org/observations/73434188
https://www.inaturalist.org/observations/104724665
https://www.inaturalist.org/observations/107541278