Here is some interesting reading & video material.
http://en.wikipedia.org/wiki/Ocean_t...rgy_conversion
http://www.nrel.gov/otec/what.html
http://www.seasolarpower.com/otec.html
http://www.youtube.com/watch?v=bgwvdjP-sCg
http://www.youtube.com/watch?v=AKm5RPAtmEU
http://www.youtube.com/watch?v=x59MptHscxY