New Robotic Technologies for marine operations

Around the world, a lot of researches are taking place and technologists are making the most of the robotic technology to come up with more automated devices, meant for a number of marine operations, from sub-sea explorations, tracking ships to surveillance of commercial activities. Please share any information related to this field of research in this thread. We need to spread the word as these things need more attention than what the celebrities are wearing in the red carpets!