Abstract
It would be desirable to develop concrete practical methods to harmonize the development of technology with the environment in an eco- friendly manner. A floating wave-energy pump has been developed utilizing up and- down motion of waves which can have many applications. We show that the application of such a wave-energy pump for improving a specified motion on fishes results in a better taste of the fish. A floating doubleacting wave-energy pump can serve as a water circulator by upwelling nutritious deep water to the surface. This could lead to a continuous production of organic substances (protein hydrocarbon, etc.) from inorganic substances and purification. Our present research focusses on re-circulation and conversion of substance and energies for creating water environments of higher productivity and purity.