"The robotic jellyfish - approximately the size of a human hand - requires batteries to operate and researchers are hoping the bot will ultimately be capable of mimicking the efficient propulsion capabilities of real-world jellyfish to extend its runtime. Using the efficient jellyfish-like method of propulsion, scientists believe the robot will be capable of running for months on a single charge instead of hours."

"A larger vehicle will allow for more payload, longer duration and longer range of operation," said Alex Villanueva of St-Jacques, New-Brunswick, Canada, and a doctoral student in mechanical engineering.

"Biological and engineering results show that larger vehicles have a lower cost of transport, which is a metric used to determine how much energy is spent for traveling."

Of course, the prototype robots can also be modded for use in monitoring ocean currents, pollution and helping to clean oil spills in the event of an accident.