Jan 14
Marine farming can capture incredible amounts of solar energy. It has been estimated that large, open ocean farms planted with giant kelp (as one example) could potentially provide most if not all of the energy needs of the United States. As contrasted with combustion of fossil fuels, marine biomass energy removes carbon dioxide from the atmosphere and converts it, via photosynthesis, into chemical energy.
Wikipedia: Biomass
(Marine Farm or Ocean Food and Energy Farm, OFEF).