Originating with a request for cooperation from the Environment Bureau of the Minato Ward Government in Tokyo, the environmental recovery and education activities of Odaiba Seaside Park, beginning with the cultivation of seaweed, have developed into a sustainable framework based on public-private partnerships and the local community. Under the mayor's slogan of "Odaiba! An ocean where you can swim," we believe the activities will widen the existing framework, and help to send a message to the world about the functions and appeal of urban shore environments.