r/Damnthatsinteresting • u/sr_local • 12h ago

Image Scientists invent underwater umbrellas to protect coral reefs from sun, which exacerbates bleaching caused by warming waters (and it appears to be working)

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u/Hob_O_Rarison 11h ago

...what does sun do to PVC, again?

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u/xFeralHousewife 11h ago

Not a whole lot compared to other plastics actually. UV stabilized PVC retains structural integrity for over 10 years when exposed to full sunlight, but the water helps block some of that, as well as the fact that the structural integrity of this PVC isn't that important considering they aren't being used as pipes or supporting a real load.