Duck Weed

Hey... My name is Kevin Goldsmith and I am a senior at L.C. Bird High 
school in Chesterfield Co. Va. I am doing a research project on DUCK 
weed and I have no IDea where to look for Info on it. Do you think you 
could help me out? And if it isn't a bother.. I also need some Info on 
Eel grass.. Thanks a Billion....
						--==Kevin Goldsmith==--