San Francisco native Andres Amador uses a simple rake to create artworks that can span over 100,000 sq. ft (9,290 sq m). His medium of choice? A sandy beach at low tide. This means Andres not only faces a time constraint to complete his work but an understanding that once the tide comes in, his work will wash away forever. To preserve his amazing accomplishments, Andres captures aerial photos of his work from an elevated vantage point or using a quadrocopter.