0
1

[–] fdjsakl 0 points 1 points (+1|-0) ago 

tl;dr

0
1

[–] kactusotp [S] 0 points 1 points (+1|-0) ago 

tldr: Sea sponge incorporates glass into its body. It does this by taking in dilute naturally occurring silicic acid and building complex shapes from thin fibres of glass. Being researched to see if it can be used to make fibre optics.