The hull, which can move in any direction, is a brand new innovation in the field of robotics. Its design consists of a flexible Fin Ray® structure inspired by the tail fin of a fish. When pressure is applied to it from the side, it does not bend away but instead curves around the pressure point. For the AquaPenguins, the bionic Fin Ray® structure has now been extended to three-dimensional space for the first time. The hull design of the penguins could be used in automation as a flexible parallel kinematic system arrangement and thus open up new application fields in handling technology.