1. Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK
2. Whitney Laboratory for Marine Bioscience, University of Florida, St Augustine, FL 32080, USA
3. Department of Informatics, University of Verona, 37134 Verona, Italy
4. Centre of Biorobotics, Tallinn University of Technology, 12618 Tallinn, Estonia
5. Rhine-Waal University of Applied Science, 47533 Kleve, Germany