Hybrid Underwater Vehicle

Hybrid vehicles combine the best features of ROVs and AUVs.
(Smithsonian Institution)

A hybrid underwater vehicle combines the best features of an ROV (remotely operated vehicle), which is connected to a ship in order to transmit data and video feeds, and an AUV (autonomous underwater vehicle), which can swim freely and cover a larger area. Learn more about Nereus, a hybrid underwater vehicle maintained by the Woods Hole Oceanographic Institution.