Take a deep dive into the ocean’s secrets. ExtremeTech reveals its hidden layers and life forms. Discover the depths of our planet today.

Take a deep dive into the ocean’s secrets. ExtremeTech reveals its hidden layers and life forms. Discover the depths of our planet today.

Near the world's coastlines, the ocean is just a few hundred meters deep because of the continental shelf, the area of shallow seafloor surrounding large landmasses.