Green sea turtles are a global endangered species, but previous research by the Sea Turtle Association of Japan has discovered that the seas around Japan contain important feeding sites, and has identfied many green sea turtle habitats in these areas. This project aims to compile all the information gathered, particularly information from field research conducted in many areas, and to evaluate and compare the number of habitats in each area and their surrounding environments. It will also identify important areas for these turtles near the Japanese coast in terms of conservation ecology, designate them as Green Sea Turtle Sanctuaries, and hold international conferences calling for them to be made protected areas. Proposing and establishing protected areas will lead to increased awareness in other relevant countries and contribute to green sea turtle conservation across the Western Pacific.