The book Seawater Concentrate on Abundant Agriculture www.sea-crop.com/book.html Every naturally occurring element on planet Earth is found in seawater. Everything soluble, given enough time, eventually ends up in the sea. If all the dissolved minerals were removed from the oceans and spread on land as dried solids, they would cover all the land of planet Earth with a layer of minerals 500 feet thick. This is our least scarce mineral resource.