How does the depth of the Okinawa Trough compare with the rest of the East China Sea?

The East China Sea is characterized by its shallow nature, with nearly three-fourths of its area measuring less than 650 feet (200 meters) deep and an average depth of approximately 1,145 feet (350 meters).1

In contrast, the Okinawa Trough—located alongside the Ryukyu Islands—is significantly deeper. A large portion of this trough exceeds 3,300 feet (1,000 meters) in depth, reaching a maximum depth of 8,912 feet (2,716 meters).1