Deepest Ocean Trenches

The top three deepestmaximum ocean trenches, based on maximum verified depths from scientific surveys and expeditions, are all located in the western Pacific Ocean and formed by subduction zones2019. where tectonic plates converge.

Mariana Trench (Challenger Deep)

Located eastplates of the Mariana Islands, this is the deepest known point on Earth. The maximum depth is approximately 10,984 meters (36,037 feet), with some measurements ranging from 10,920 to 11,034 metersPhilippines depending on the method and year. It’s deeper than Mount Everest isdepths. tall.

Comparison

Tonga Trench (Horizon Deep)

Locateddepth in theformed South Pacific near Tonga and the Kermadec Islands, this is the deepest point in the Southern Hemisphere. The verified depth at Horizon Deep is2019. 10,823 meters (35,509 feet), confirmed by a mannedof submersible descentunique in 2019.

Philippine Trench (Galathea Depth)

Located east of the Philippines in the Philippine Sea, its maximum depth is 10,540 meters (34,580some feet). This makes it the third deepest, though some older sources vary slightly in exact figures.

These trenches host extreme environments with immense pressure, near-freezingfrom temperatures, and unique hadal zone ecosystems adapted tomaximum the dark depths.

Quick Comparison Table

temperatures, class=”has-text-align-center” data-align=”center”>~10,540 m

Rank	Trench	Deepest Point	Approx. Depth	Region
1.	Mariana Trench	Challenger Deep	~10,984 m	Western Pacific
2.	TongaPointApprox. Trench	Horizon Deep	~10,800 m	South Pacific
3.	Philippine Trench	Galathea Depth	Western Pacific