• Question: Can volcanoes erupt underwater?

    Asked by anon-278423 on 2 Feb 2021.
    • Photo: Graham Shields

      Graham Shields answered on 2 Feb 2021:

      Yes they can.When they do, there is a sudden cooling of the magma. The rims get shocked by the cold water and hardens into a pillow – the entire seafloor is made of such pillow lavas beneath the sediment. Most volcanoes are in the centres of the ocean.

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