The Nihonkai Sea, also known as the Japan Sea, is a marginal sea located between the Japanese archipelago and the Asian continent. It is bordered by several countries, including Japan, Russia, and North Korea. The sea is known for its rich marine biodiversity and is an important fishing ground. The Nihonkai Sea has a unique climate, influenced by cold currents from the north and warm currents from the south. This results in distinct seasonal changes, with heavy snowfall in winter, particularly in the Sea of Japan region of Honshu. The sea plays a vital role in regional trade and transportation.