There must be some people out there desperate for pictures of sponge skeletons because, believe it or not after Flos Carmeli, this is the top search that leads people to my site. Frankly, I don't even recall posting anything about this truly beautiful animal; however, I'll look at my search engine and see what it was that I did that would lead people here.
Just to make certain we have things straight--it should be Euplectella aspergillum