TWRoO on 04 March 2010
You haven't properly finished yet 
What are your other stats? how many dolphins... how much money etc.
If you have played for 25 hours, you still have a LOT to do (though yes, main story pretty much complete as far as I know) I recently crossed 110 hours and it was about then when I pretty much ran out of side stories (I still have 1 incomplete but it's the one about collecting coins)
Despite running out of side stories though, I still have quite a bit to do myself (completing the marine encyclopedia and the salvage items and coins, playing in the private reef, lots of dolphin training, and otherwise getting the rest of the achievements.
