Krakowhydra velox
This swift filter-feeder posses a unique twisted tail. Composed of multiple cells (each one originally an 'arm' of the K. symbiotae). The remaining arm has become a funnel to capture edible particles and cells. The nodules behind the funnel are chemo-receptors. When they detect the 'smell' of debris a simple chemical signal-chain is set off which causes a change in the motion of the mega-flagellum and sends the organism in a different direction. This is the humble beginning of a rudimentary nervous system. Reproduction involves the growth of a spore producing cell at the twisted tail-base, which sheds spores into the water to grow into new K. velox.