The same as most nations use the waterways; transportation of goods & trade.
it is the sea of japan witch leads into the pacific answer
The Sea of Japan is between Japan and North Korea.
It is the Sea of Japan.
If you are referring to seas, the Japan sea and the Pacific ocean are on either side of Japan. If you mean the body of water between Hokkaido and Honshu it is called the Tsugaru Strait.
The Times called the sea between Korea and Japan the 'Sea of Japan' instead of the 'East Sea'.
Japan is in the sea
Japan is separated from mainland East Asia by the Korean Strait and Sea of Japan.
Called the sea of Japan, and a slight part of Japan has a sea called Sea of Okhotsk above it
Japan sea.
The Sea of Japan.
The Sea of Japan is the only sea that borders Japan.
National pride./ Korean called the sea 'East Sea' since 414 (or before). But, Japan called the sea 'The Sea of Japan' since 1602(But they still used 'East Sea' more. And Japan decided to call the sea 'The Sea of Japan' in international conference, 1912(at that time, Korea was colony of Japan). And now, two country argue about that(and Korean tries to call the sea 'East Sea'). In fact, 'The sea of Japan' is wrong name cause the sea is between Korea and Japan-and Korea is not Japan anymore!