The Hypersea hypothesis offers a bold and comprehensive description of terrestrial life as an immense upwelling of minerals from hydrosphere and lithosphere... The hypothesis will open the fields of physiology and evolution to grand questions, but perhaps even better, to the power of experimental and comparative inquiry. -- Paul Mankiewicz, Director, Gaia Institute

This text describes the evidence for how life moved from sea to land, beginning more than 400 million years ago, employing the concept of "Hypersea" which is the idea that the barren land surfaces of the Earth could only have been colonized by multicellular organisms working in concert.