Description:
<jats:p>Paper presents gradual progress in the development of biomimetic mobile underwater robot with undulating propulsion starting from the rugged but functional first version of CyberFish through very agile and manoeuvrable second and third version till fifth one – accurately imitating real fish. Trends in BUUV technology is briefly described in the introduction. The second and third sections describe previous, and actual state of CyberFish project successfully carried out at Cracow University of Technology and focusing on the succeeding robots design and construction. Paper is summarized with problems of the BUUV technology development yet to be solved.</jats:p>