In oceanography, a "knoll" refers to a small hill or mound that rises from the seafloor. These underwater features can vary in size and are often found on the continental shelf or in ocean basins. Knolls are typically formed by geological processes such as volcanic activity, sediment deposition, or tectonic movements. They can serve as important habitats for marine life, providing structure and substrate for various organisms. Additionally, knolls can influence ocean currents and contribute to local ecosystems.
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