Two of four μ-CAT (also called mu-CAT, micro-CAT, u-CAT) robots that were shown at Robotex 2013 (Tallinn) and Robot Safari (London Science Museum, November 2013). Robots are made in Centre for Biorobotics, Tallinn University of Technology. These small robots are "demo versions" of a bigger robot, the U-CAT (Underwater Curious Archaeology Turtle). The U-CAT is built to help archaeologists to explore shipwrecks, for example. More about the project: www.arrowsproject.eu