The Phylum Porifera is made up of Sponges.
Helpful Sources
Here are some cool links to help you understand the porifera phylum better.http://www.ucmp.berkeley.edu/porifera/porifera.html
http://www.infusion.allconet.org/webquest/PhylumPorifera.html
http://classic.sidwell.edu/us/science/vlb5/Labs/Classification_Lab/Eukarya/Animalia/Porifera/
http://www.infusion.allconet.org/webquest/PhylumPorifera.html
http://classic.sidwell.edu/us/science/vlb5/Labs/Classification_Lab/Eukarya/Animalia/Porifera/