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  1. Deep-sea trench | Oceanography, Geology & Marine Life ...

    Oct 29, 2025 · deep-sea trench, any long, narrow, steep-sided depression in the ocean bottom in which occur the maximum oceanic depths, approximately 7,300 to more than 11,000 metres …

  2. Oceanic trench - Wikipedia

    Oceanic trenches are a feature of the Earth's distinctive plate tectonics. They mark the locations of convergent plate boundaries, along which lithospheric plates move towards each other at …

  3. Ocean Trench - Education

    Nov 29, 2023 · Ocean trenches are long, narrow depressions on the seafloor. These chasms are the deepest parts of the ocean—and some of the deepest natural spots on Earth.

  4. Ocean Trenches - Woods Hole Oceanographic Institution

    Oct 10, 2022 · Ocean trenches are steep depressions exceeding 6,000 meters in depth, where old ocean crust from one tectonic plate is pushed beneath another plate. Trenches make up …

  5. What Are Ocean Trenches and How Are They Formed?

    Jun 14, 2025 · Ocean trenches, often called the abyssal plains ‘ antithesis, are profound underwater canyons significantly deeper than the surrounding ocean floor. Think of them as …

  6. Deep-Sea Trenches Fact Sheet – Gerringer Lab

    Map of major deep-sea trenches and other hadal habitats around the world. Most deep-sea trenches are in the Pacific Ocean, due to the high amount of geological subduction, where one …

  7. What Are Deep Sea Trenches and the Life Within Them?

    Jul 27, 2025 · The ocean’s deepest regions hold some of Earth’s most extreme environments: deep sea trenches. These profound depressions in the seafloor are characterized by perpetual …