We have robots for the home, in factories, and more and more in the sea. The flks at ETH Zurich are working on the Naro-Tartaruga, a turtle-inspired robot that would swim efficiently while carrying cargo in its shell.
Right now it’s a simple cylindrical aluminum vessel with some flippers, but the design should eventually look like the image above. It has a top speed of over 7 knots, so it’s faster than a real turtle. That torso has enough space for a battery and sensors.
There are three actuators per fin, and each actuate the fin axle independently. It should freak out a lot of fish one day soon, maybe some fishermen.