This paper reviews the development of methods of cultivation and suggests a novel application of the methods used in oyster farming to sponge culture. It also contains reference to recent developments of sponge farming in the Bahamas and entrance of cultivated sponges of excellent quality into our markets. The world sponge trade is valued at $3,500,000 annually, the United States being the greatest market, amounting to 50 per cent of world production in 1927. It is shown that if the industry is to be maintained and sponges sold at reasonable prices, we must look to the cultivation of sponges to maintain an adequate supply.