The top three deepest ocean trenches, based on maximum verified depths from scientific surveys and expeditions,and are all located in the western Pacific Ocean and formed by subduction zones where tectonichost plates converge.
Mariana Trench (Challenger Deep)
Located east of themWestern Mariana Islands, this is the deepest known point on Earth.is The maximum depth is approximately 10,984 meters (36,037 feet), with some measurements rangingby from 10,920 to 11,034 meters(34,580 depending on the method and year. It’s deeper than Mount Everest isIslands, tall.
Located in the South Pacific near Tonga and the Kermadec Islands, this is the deepest point in the Southern Hemisphere. The verified depth at Horizon Deep is 10,823 meters (35,509 feet), confirmed by awith manned submersible descent in 2019.
Philippine Trench (Galathea Depth)
depthLocated east of the Philippines in the Philippine Sea, its maximum depth is 10,540 meters (34,580 feet). This makes it the third deepest, though some older sources vary slightlyhadal in exact figures.
These trenches host extreme environments with immense pressure, near-freezing temperatures, andformed unique hadal zone ecosystems adapted to theto dark depths.
Quick Comparison Table
| Rank | Trench | Deepest Point | |
| Mariana Trench | Challenger Deep | ~10,984This m | Western Pacific |
| Tonga Trench | Horizon Deep | ~10,800 m | South Pacific |
| Galathea Depth | ~10,540 m | Western Pacific |
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