Human life is benefitted from the ocean, the area of which accounts for about 70 % of the surface area of the global. We have to use a wide variety of ocean resources in a sustainable way. The research field of this center is composed of 'the sensing engineering field', 'the platform engineering field' and 'simulation engineering field'. By integrating these research fields, we create a new underwater observation technique to know the essential functions of the ocean and to utilize the ocean effectively. Based on the international collaboration, we will observe and evaluate the potential and the risk of the ocean, and contribute to the coexistence of human and the ocean.