This particular pearl farm is on a remote island in Eastern Indonesia called Seram. Pearls are grown in the Phillipines, Mynamar, Indonesia, Australia, Hawaii ,Thailand and the Gulf of California. China and Japan grow both freshwater and saltwater pearls. Freshwater pearls are also grown in the state of Tennessee,in the USA. at the Tenn. Freshwater Pearl Farm.
Many pearl farms are located in secluded warm areas called atolls. The distance between these small islands can be hundreds of miles and many pearl farms can only be reached by sea planes. Atolls take tens of thousands of years to form. An animation on the formation of atolls can be found at the following link.