While much of the seafloor is flat abyssal plain, there are areas where submarine canyons cut deep into the ocean bottom and seamounts rise from the ocean floor. Varying in size, shape, and complexity, these canyons and underwater mountains are not only interesting geological features in the ocean, but they also create habitat for deep-sea animals, providing shelter and hard surfaces on which to attach and diverting ocean currents to bring food to the deep. This playlist highlights the geology and biology of submarine canyons and seamounts visited during past expeditions supported by the NOAA Office of Ocean Exploration and Research.


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