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Dive 18: West Nihoa
Video courtesy of the NOAA Office of Ocean Exploration and Research, 2015 Hohonu Moana. Download (mp4, 104.1 MB)

Dive 18 was conducted on August 20 at a channel between Westpac Bank and Nihoa Island, which creates a constriction point for current flow. The objective of the dive was to survey a completely unexplored area for corals and sponges, gathering information on whether high-density communities can be found in areas were the surrounding topography accelerates current flow.