The author proposed the satoumi concept, analogous to the satoyama concept on land, as coastal sea with high biodiversity and productivity in harmony with human interaction in 1998. The concept for environmental conservation in the coastal seas has been widely accepted and was included in the Japanese national policy of Strategy for Establishment of an Environmental Nation in 2007. This book is a translation of the author s Japanese book (2010) in response to concerns and questions about satoumi, including: Does biodiversity increase as a result of human interaction in coastal seas? Do the...