 The importance of the fishery in the sea is illustrated by the territorial disputes between Japan and South Korea over Liancourt Rocks and between Japan and Russia over the Kuril Islands.It is also reflected in various legends, such as the legend of the Heishi rock, which says that once when herring vanished, an old fairy threw a bottle with a magic water into the sea, and the herring returned.The bottle got stuck to the seabed and turned into a rock, which became a representation of the God of the Sea of Japan.