What is an oceanic trench?

A very deep narrow depression in the seafloor.

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  1. A flat underwater plain
  2. A very deep narrow depression in the seafloor ✔
  3. A shallow sandy shelf near shore

Why: An oceanic trench is a very deep, narrow depression in the ocean floor.

Huh, didn't know that: An oceanic trench is a very deep, narrow depression in the ocean floor.

The dad joke
A trench is a deep subject, so oceanographers dig into it.
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References

Answer: A very deep narrow depression in the seafloor. An oceanic trench is a very deep, narrow depression in the ocean floor.

  1. Scouting America: Oceanography www.scouting.org/merit-badges/oceanography
    Name and put on your drawing the following: seamount, guyot, rift valley, canyon, trench, and oceanic ridge.
    Checked 2026-11-07.

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