A pancake urchin (Hygrosoma sp.) moves across some discarded human debris. McMaster Canyon had the most evidence of human impacts that we have seen yet on this expedition.

A pancake urchin (Hygrosoma sp.) moves across some discarded human debris. McMaster Canyon had the most evidence of human impacts that we have seen yet on this expedition. Image courtesy of NOAA Okeanos Explorer Program, Our Deepwater Backyard: Exploring Atlantic Canyons and Seamounts 2014.

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