Rounded boulders on the edge of a channel or ravine in the lava rock of aseamount. Although looking like sand, the channel is filled with some sort ofshell material.
4/9/2019 1:52:38 PM
Date: 20160303T004135Z
Credit: NOAA Office of Ocean Exploration and Research, 2016 Hohonu Moana
Location: Hawaii, Pioneer Bank, south of