Overview 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 white line is an arc along which Flight 370 is likely to have been when last contact was made with it on 8 March 2014. The grey area is bathymetric data that was acquired by satellite and the darker grey area along the arc is the search area for Flight 370.