Here on ATP we mostly deal with plants in ground, in pots, in planters, plus hydroponic gardening and aquaponic gardening. Sort of each thing separate. Putting together the paludarium is a huge undertaking and will be tricky to get everything to co-exit and thrive.
There was some discussion about planted aquariums, focusing on pretty plants and fish, which lasted a few months here:
The thread "Planted aquariums" in
All Things Gardening forum
I found a site discussing paludariums...
http://www.thereeftank.com/for...
Another here...
http://www.reefcentral.com/for...
So far all I know is to narrow the search by using the keywords "salt tolerant plants marine paludarium"; most results are from folks asking if it's possible and most answers suggest Mangroves...not exactly tiny plants. There will be salt creep up the sides of the glass so you'll have to deal with that.
Yep, a visit to the shoreline or similar place might give you some ideas.
Don't know where you live. Here in Savannah we have access to the University of Georgia UGA Marine Education Center and Aquarium:
http://marex.uga.edu/aquarium/
Don't know if that wasn't much help. Hope you succeed; this is an interesting project.
