Posted by Terrae on Thursday, January 29, 2009 at 5:47pm.
I've read that some of the original sponges were made from the skeletons of real sponges
:P
I D K! i dont think that they are made from real skeletons but maybe from a different substance
y012f is correct that the original sponges were dead marine life but the new ones are synthetic, usually made of urethane foams or silicones. The composition varies somewhat depending upon the intended use; for example, a cosmetic sponge used for applying makeup would be different than those used for washing dishes.
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