NO DIRT NEEDED FOR THIS HOME...
After researching yacht architecture, the pair came up with the idea for a self-sufficient 2 family home that includes an integrated floating dock (rises and falls with tide levels), desalination water treatment, and tidal and solar energy generators.
I found this picture at... http://bubuiainstitute.wordpress.com/2010/03/24/self-sufficient-house-on-the-water-by-formodesign/
From Larry Tutino, Founder of this Blog