Japanese fishing industry

Locals collecting shellfish.

Fisheries round the world may be affected by land reclamation and dredging. In this inland sea area there are oyster farms, cities, various forms of coastal industry, sewage discharge and new man made islands which change the water flow. Vigorous steps have been taken to reduce pollutants such as phosphorus after a series of ‘red tides’ in the 1970’s but it is still very difficult to produce an accurate model of all the water, sediment and pollutant flows around these very large water bodies.