根据ChatGPT，东海平均水深350米，大部分海域浅于200米。里面是ChatGPT说的：

The East China Sea is relatively shallow compared to other seas.

 

• Average depth: about 350 meters (1,150 ft)
• Maximum depth: around 2,716 meters (8,911 ft)
• Shallowest areas: much of the sea is less than 200 meters deep, especially along the continental shelf extending from China’s coast.