Abstract: A method and apparatus for raising plant and animal life in a marine environment. Fish, snails, other animal life as well as plants are raised in a raceway which is embedded in a bed of porous material with one end lower than the other. Temperature controlled water flows through the raceway with the water movement helping to maintain the water clean of waste products and nitrates that normally accumulate in circulating water tanks. If necessary, geothermal water conducted through tubes proximate to the raceway can be used to maintain the flowing water in the raceway at an ideal temperature for promoting the rapid growth of the fish, plant and animal life. When the fish or other animals being cultivated are ready to be harvested, a catch box designed for use in the raceway is pulled along the raceway. The catch box, with the captured cultivated animals is then removed from the raceway.