I had an idea a number of months back as a, at least partial, source of energy we humans could tap. Solar energy. Already been thought of I know, but not like this. Genetically engineer the aquatic plants called water hyacinths(Eichhornia crassipes) to be capable of growing in salt water and instead of filling their lift bladders with gas, they fill them with vegetable oil; another spliced in trait. Water hyacinths are blights in fresh water, they'd be blights in the ocean as well; if they weren't harvested for the oil. But they would be, that's the whole point. They can double their numbers in two weeks. The vegetable oil version wouldn't be capable of this, likely, due to the amount of energy that would need to go into synthesizing the large amounts of oil. However, giant hyacinth mats, hundreds of thousands of square kilometers in area, in the Pacific ocean between the Tropic of Capricorn and Cancer, would clean up, so to speak, in their growth rate. My first is, how soon is such genetic control going to be possible,i.e. when can such plants be created? Second question, what kind of idea is this, insane to try?