A seascraper, also known as a waterscraper, is a proposed large building which will function as a floating city. It would generate its own energy through wave, wind, current, solar, etc. and produce its own food through farming, aquaculture, hydroponics, etc. The term "Seascraper" is an analogous derivative of "Skyscraper". A seascraper concept was proposed and described by William Erwin and Dan Fletcher in the 2009 Evolo Skyscraper Competition, where they stated,