Trenches
deep sea canyons
There are more than one term for a deep narrow valley. Glens, canyons, ravines, fjords are terms you could use.
The oceans floor doesn't just keep getting wider instead the ocean floor plunges into deep underwater canyons called deepocean trenches.Where ever deep ocean trenches are there is subduction.
A deep gorge eroded by water is called a canyon. Canyons are typically formed over millions of years by the flowing water of rivers cutting through and gradually carving out the rock and earth to create a steep-sided valley.
A deep valley carved by a river is called a canyon. Canyons are typically characterized by steep sides and are formed over long periods of time by the erosive action of flowing water.
A scuba diver.
Aquifers.
The answer for that question is either landforms or erosion .My personal preference is that it is probably Erosion . :)
Erosion contributes to the formation of deep valleys and canyons by gradually wearing away the rock and soil over time through processes like water flow, wind, and ice movement. The continuous removal of these materials deepens and widens the valleys and canyons, creating the distinctive landforms we see today.
A deep narrow passage between mountains is called a canyon. Canyons are formed over thousands of years by erosion from flowing water, creating breathtaking natural landscapes.
deep canyons
what happens is the ocean floor does not just keep spreading.instead, it sinks beneath deep underwater canyons called deep- ocean trenches