Sooooooo many species of sponges...
"Boring (burrowing) sponges create a canal system by chemically etching out coral or shell material for shelter.."
" capable of encrusting the surface and smothering the host."
he said it was inside the skeleton
Indian River Lagoon Species Inventory Home
naturalhistory2.si.edu
"Boring (burrowing) sponges create a canal system by chemically etching out coral or shell material for shelter.."
" capable of encrusting the surface and smothering the host."