In the twenty years since UNCLOS came into effect, conflict of interests in the ocean have gained strength, unexpected situations and disputes have frequently arisen, and the delicate balance between coastal and user states introduced by UNCLOS has been upset here and there. The marine environment is an important part of the overall global environment, and how we manage marine resources and conserve the marine environment is the responsibility of the present generation towards those of the future. International cooperation is indispensable in the management of the oceans.