It is known as the "Sea of Japan," though Korea in particular would prefer it be known as the "East Sea."
East China Sea
The Sea of Japan
The Sea of Japan (also known as the East Sea) separates Japan from Asia.
The body of water that separates the three main southern islands from the rest of Japan is the East China Sea.
Water.
Bass Strait separates the mainland of Australia from Tasmania
asia
If the three main southern islands you are referring to are the Ryukyu Islands, including Okinawa, and the rest of Japan referring to the 4 main islands of Japan, then the answer is the East China Sea. If the three main southern islands you are referring to are Kyushu, Shikoku and Honshu, and the rest of Japan referring to Hokkaido, then the answer is the Tsugaru Strait.
I think it is the main island of Japan
Yes it does No. it doen't! Main land Japan does but no in Okinawa!
japan
The largest or most powerful/influential countries in Asia include China, Russia, India, Japan, Iran, Israel, and Vietnam.
The English channel to the South of the UK. The North Sea to the east of the UK
. . . to exploit mineral resources such as oil .