*By the way, subduction zones are where the deepest ocean trenches reside. These trenches are created due to the collision of the oceanic plates & continental plates.

And since it's the ocean floor [plates] that moves & collides into the continents, then trenches are found off the coast of the Americas & Asia Pacific such as: the Peru-Chile trench, the Juan de Fuca trench, the Aleutian trench, the Japan trench, the Tonga trench, & the Marianas trench: the deepest of all ocean trenches whereby the steepest portion is located nearby the Philippines & is therefore called "the Philippine Deep".

Overall, the sea floor of the Pacific is indeed moving slowly thru time at both directions making them collide to the American & Asian continents.

But how you may ask?

Well, we'll get to that later on.