In regards to the water flea pictures, below are some links to some interesting fact sheets. I tried to create hyperlinks but the posting rejected it as "spam" So you will have to copy and paste in your browser. Will see if this works. (well now I see it took it....) These things have a very interesting "reproductive capability"

http://www.seagrant.umn.edu/exotics/spiny.html

http://ohioseagrant.osu.edu/archive/...derstroemi.pdf