Two books have been published as part of the “Relations between Oceans and Humans” series. The books are based on articles from previous editions of the “Ocean Newsletter,” supplemented by new material. The relationship between oceans and humans can be seen throughout history and across the globe in various and complex patterns. From the many ocean issues of urgent importance, I chose the two themes of “For Japanese people to continue their fish consumption” and “To protect the marine biological diversity in the ocean.” I hope this series will serve as a good introduction for considering about the future of ocean policy.