Multibeam sonar systems also capture backscatter data from the water column. While mapping the Vailulu’u Seamount, explorers detected a plume of bubbles rising from the seafloor.
Vailulu’u Seamount
Image courtesy of he NOAA Office of Ocean Exploration and Research, 2017 American Samoa. Download larger version (jpg, 637 KB).

Multibeam sonar systems also capture backscatter data from the water column. While mapping the Vailulu’u Seamount, explorers detected a plume of bubbles rising from the seafloor.