*"AUVs." One hears much less of these aautonomous underwater vehicles than one hears about aerial drones, probably because they haven't killed anybody (that one knows of).
(...)
"Ocean gliders are becoming one of the Navy's main tools for collecting data on the internal structure of the ocean for assimilation into ocean models. A glider is a long-endurance autonomous underwater vehicle (AUV) used to collect ocean data; it surfaces periodically to transmit data via satellite. Gliders are capable of collecting numerous types of data, including currents, temperature, salinity, pressure, and optics...."
