Robot Sub Searching For Malaysian Jet Finds Itself Out Of Its Depth

A Bluefin-21 AUV at the Surface of the Water After a Mission Bluefin Robotics The search for Malaysia Airlines Flight MH370 has moved underwater, but it's still not easy. A robotic submarine deployed yesterday returned to the surface sooner than expected because it encountered depths beyond its capabilities, Australian broadcaster ABC reports. The search is occurring in the southern Indian Ocean, northwest of the Australian city of Perth. BBC News has great graphics showing the sea-floor geograp...