Seven months after MH370 disappeared, ships leased from the Dutch maritime survey company Fugro were at last ready to begin searching the seabed that Australian scientists had defined using data mysteriously transmitted from the aircraft during its final six hours. Fugro’s ships faced a daunting task: searching a vast area, far from land, where abyssal plains and steep-walled canyons lay concealed beneath three miles of water. The search authorities were confident that success was right around the corner — at least at first. But as days turned to months turned to years without any sign of the missing plane, they began to wonder if they had made a mistake. Had one of their assumptions been wrong? Was it possible the plane wasn't in the underwater search area? And if so, where else could it have gone? More info at deepdivemh370.com.