Using satellites that measure wave height, Dr. Walter Smith and a team of scientists, engineers, and programmers have determined a way to infer the underlying topography beneath the ocean's surface. This team discovered that large dense features which have a stronger gravity field pulled the ocean's water into small, but measureable piles of water over the feature. The maps Walter and his team create now help answer the questions Walter first asked himself when he began his research, "How many volcanoes are beneath the ocean’s surface?"