Image courtesy of the NOAA Office of Ocean Exploration and Research, Northeast U.S. Canyons Expedition 2013. Download larger version (jpg, 1.6 MB).
During a Northeast U.S. Canyons Expedition 2013 dive along the southwestern wall of Welker Canyon off the coast of New England, the team observed several clear erosional features in the rock wall such as caves, deep concavities, or amphitheater-shaped curves. Octopods were often observed in these depressions and under large rock ledges. Can you find the one in this image?