Not just any sand could be used for filtering water or filling stove bottoms. In the ocean, there are small fine sand accumulations. They stand out even more in clear water. This sand is extremely fine, and is quite useful for various purposes. First, Neil made five buoys, making sure the rope length is as tall as himself. With these, he will mark shallow sand accumulation areas. Then, all he would have to do is drive the raft there, and then, bring sand up with the wooden bucket. Before those two tasks, first create a drying rack. He set the drying rack to be built. Read more