Zebra Mussel

Sea Grant Images of Zebra Mussel

http://www.ag.ohio-state.edu/~earthsys/zebra.html

http://nas.er.usgs.gov/taxgroup/mollusks/zebramussel/zebra_gallery.asp

http://www.fish.washington.edu/naturemapping/water/2habriv.html

http://en.wikipedia.org/wiki/Zebra_mussels

http://www.angelfire.com/ca/divers3/zebramussels.htm