bakkat muljil conducted by the Jeju haenyo has a lot of implications as they expanded the activities to Asian countries and propagated their unique cultures. Until the early period of the Jeju haenyo starting the bakkat muljil, there had been no similar people who tried to harvest the marine product from the bottom of the sea in mainland Korea, some parts and islands in Japan, China and Russia with the naked body without any special tools as Jeju haenyo did. Not until the Jeju haenyo went there and started the diving job there did they live in those places and learned the skill. The efficient operation system (jamsugye system), adoption of “no harvesting period” system and the profit sharing through joint work of Jeju haenyo have been adopted. Jeju haenyo has especially propagated the knowledge on how to cope offshore. The effectively used it to their advantages, changed the local economy as well as accumulated their individual wealth through the job and expanded the new living scope to the sea. They also made a critical influence on the positive female participation in the job market.