English: Image of bathymetric data obtained from a bathymetric survey conducted in the Southern Indian Ocean as part of the search for Malaysia Airlines Flight 370 (MH370) between March & September 2014. The grey area is bathymetric data that was acquired by satellite, which contrasts with the detailed data (colored) acquired by ships. The bathymetric survey was conducted prior to an underwater search to be conducted by towed imaging devices, which will be maneuvered 100 m above the sea floor. The contrast in resolution between the satellite and the ship-conducted survey highlights the reason that the ship-conducted bathymetric survey was necessary before begining the underwater search.