I'm sure that the swamp water you saw was made by following this tutorial. (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=8323.0)
You could find a few creatures and plants here. (http://feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=8174.msg196067#msg196067)
Other meshes you might have been looking for (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=10942.0)
I have these floating around somewhere in my favorites.. I'll try and find them for you:
Rat, mouse, crows, dead things, skull's. (Yeah, in my FH game Object creator, the skull/spine wont load for me)
Spider mesh.
cat mesh, cattle mesh and human mesh (If possible)
Note to self: clean out your favorites list. LOL.