Pock marks mapped by Hassler in the vicinity of Block Canyon.  These depressions in the seabed are approximately 10 meters deep and 150-200 meters across.

Pock marks mapped by Hassler in the vicinity of Block Canyon. These depressions in the seabed are approximately 10 meters deep and 150-200 meters across. Image courtesy of NOAA Ship Ferdinand R. Hassler.

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Related Links

Atlantic Canyons Undersea Mapping 2012 Expeditions: Expedition 3 Summary

Atlantic Canyons Undersea Mapping 2012 Expeditions

NOAA Ship Okeanos Explorer

NOAA Ocean Explorer Gallery