Considering how little we know of the ocean, combined with the fact that 70% of the planet is, in fact, ocean, I'd say the chance of that is not that unlikely at all. Sure it might not be rocks but the possibilities are endless.,(reply>), The ocean covers 70% but when you take all the water and put it into a ball next to the earth it's amazingly tiny.<br>Where i think we could discover amazing things is inside the planet...