Mixed Sea Culture by Means of Biological Features

n general, kelp absorbs CO2 and discharges oxygen in the course of photosynthesis. On the contrary, mussel absorbs oxygen and discharges CO2. The Riwon Fishery Station is encouraging mixed culture of kelp and mussel on the basis of such features. At present, the station breeds mussel and kelp in the upper part of its shallow-sea breeding ground covering an area of over ten hectares and trepang on its bed. According to its manager, the mixed culture of kelp, mussel and trepang is very profitable as they grow fast, interacting each other favourably. Since its introduction of the mixed culture, the station has increased production by more than 1.5 times. It stocks the breeding ground with hundreds of thousands of trepang fry every year.