Drones, gliders, and ROVs are all being used to help scientists better study the oceans and marine animals.
For example, students at Duke University Marine Lab have been using drones to survey pinnipeds on the Pribilof Islands, AK.
Well, now robotic jellyfish have been added to the list!

Check out this story from Science News for Students about how small robotic jellyfish can help monitor fragile habitats like coral reefs. CLICK HERE
Original article and photo credit: J. Frame et al. Thrust force characterization of free-swimming soft robotic jellyfish. Bioinspiration & Biomimetics. Published online September 18, 2018. doi: 10.1088/ 1748-3190/aadcb3.