Ryukyu Trench

The Ryukyu Trench is an 1,398 mile long ocean trench running north along the eastern edge of Japan's Ryukyu Islands in the Philippine Sea. It is located between Taiwan and Japan. The trench goes as deep as 24,629 feet.

This trench has also been called the Nansei-Shoto Trench, after an alternate Japanese name for the Ryukyu Islands.