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    The Underwater World Quiz

    Test your knowledge about the fascinating world beneath the waves with this quiz. Explore topics such as marine life, oceanography, and the underwater ecosystem.

    What is the largest mammal in the ocean?

    What is the primary source of energy for most life in the ocean?

    What is the most common type of shark found in the ocean?

    What is the deepest known part of the ocean?

    Which of the following is a bioluminescent creature?