[Coral-List] sponge

[bexklaus at aol.com]

Dear Listers, 

Has anyone come across the encrusting red sponge shown in the pictures below:
http://www.uni-duisburg-essen.de/~bbi380/Sponge%20disease2.tif 
http://www.uni-duisburg-essen.de/~bbi380/Sponge%20disease11.tif 

The sponge is infesting Porites colonies in the Gulf of Aden. 
 
Any information about species/genus/ecology of the sponge are welcome. 

Thanks 

Rebecca Klaus & Michael Eisinger