Oysters are one of the most cultivated things in Kerala, India today. The farming that took off in the Ashtamudi Lake and the Vembanadu Lake has spread to many other places of Kerala, India. The reason for the popularity in oyster farming is the nutritive value and taste of oysters. Oyster is the product of sea, and they can be taken from the sea or bought from hatcheries. While buying young oyster, certain things are to taken care of. The larva should be fully grown and the reproductive organs should be checked while buying young ones. Places near to backwaters or sea are ideal for oyster farming. These conditions can be created artificially to cultivate oyster and the place should not be affected by tides. The depth of the pond should be 5 meters, and the salinity should be 22-35 PPT and the temperature should be 21-31 degree Celsius. Oyster should be cultivated by hanging them under water. For this we can use ropes, long lines, umbrellas etc. to cultivate oysters. They grow fast while hanged rather than in the bottom of water. Oysters are cultivated using row boats also. Another method of oyster farming is fixing poles under water and fix the oyster stick on to them using nails. In long line method of farming, floats are attached and long lines are kept afloat and the parallel sides of the long lines are tied together, in which the stick with young oysters are hanged.
The oysters attain fleshiness during the months of March–April. Harvesting is done in this time. The oysters collected from the lakes are to be cleaned nicely to get rid of bacteria etc. The flesh is separated from the shell by putting them in boiled water. The shells of oysters are used to make lime, manure, cement etc. Oyster farming is a good source of income to the people living in coastal areas.