No description on oceans is found in the textbooks of science for primary and junior high school pupils in Japan. This is due to the fact that there is no department of oceanography in the faculty of science in Japanese national universities, because the contents of textbooks coincide with those of the faculty of science. This university system is also the reason behind an extremely small number of teachers who can teach marine science sufficiently. Thus, it becomes difficult for the Japanese to understand oceans correctly.

Since our founding 77 years ago, the marine propeller has always been the backbone of Nakashima Propeller's business. To date, we have manufactured over a million different propellers and take pride in the cutting-edge technology and skilled craftsmanship required in achieving the optimal design. We realize however, that the ever decreasing domestic propeller market severely limits our ambitions to expand as a company. Therefore, Nakashima Propeller has been developing new businesses, applying the core belief of quality custom manufacturing to the creation of products in other areas.

Utilization of the deep ocean water as a resource inherent in the oceans is considered to have the potential to become one of the most significant resources that could allow us to concurrently resolve food, energy and environmental problems that human beings will be confronted with in the future. As an example of utilization of the deep ocean water eutrophy, we introduce an Ocean Nutrient Enhancer, "Takumi," which is being developed by the Marino Forum 21 correlated office of the Fisheries Agency of Japanese government. It is hoped that this study aiming at a simultaneous production of food, energy and fresh water will become a breakthrough for creating a new marine industry.