Question

short answer
Explain how the Pacific Ocean is getting smaller.

Answer 1

The Pacific Ocean is getting smaller primarily due to the process of plate tectonics. The Pacific Plate is slowly being subducted beneath surrounding tectonic plates, particularly the North American Plate, South American Plate, and several others along its boundaries. This subduction causes the ocean basin to shrink as the ocean floor is forced down into the mantle, leading to a gradual reduction in the size of the Pacific Ocean over geological time.