Where And What Is The Deepest Trench In The World? (incl. depth information)

Located in the depths of the Pacific Ocean, The Mariana Trench is the deepest point in the world’s oceans ever recorded, and is part of the “Izu-Bonin-Mariana” subduction system (the process of one of the Earth’s outer layers being pushed under another) which is the reason for its impressive depth. It has been the focal point of a lot of research due to its unique depth and the implications it has on the life within it. It was first discovered by the HMS Challenger is located South of Japan and East of the Philippines (11o20’ N, 142o 11’ E) in the Pacific Ocean. Challenger Point (named after the ship from the 1875) is the deepest point of with an approximate deepest point of 10,994 metres ± 40 metres (36,070 feet ± 130 feet) from the ocean’s surface (11o22.4’N, 142o35.5’E). Such a high depth means that

  • Jacques Piccard expedition
  • Continued exploration by different countries and varying depth records


Discovery And Exploration

When the trench was originally (measured by submersibles and sonar bathymetry)

  • Variation in climates (deep cold, vents, hydrogen sulphide)


What Lives In The Trench?

The incredible depth of the Mariana Trench means that there is next to no light and an incredible amount of pressure. This limits the amount of life that can thrive in the trench.

  • Barophilic bacteria
  • Classic deeps (angler etc.)
  • Vent crabs
  • 200 different microorganisms in benthos (viscous ooze on seabed)
  • Write about longevity of animals
  • Bioluminescence usage
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