Flying into sensory and mesogleal neurons from a ctenophore (comb jelly). 

From our work "Syncytial nerve net in a ctenophore adds insights on the evolution of nervous systems" available here: www.science.or...
For more information about our research see: www.uib.no/en/...
Video taken by Leonid Digel and Pawel Burkhardt based on electron microscopy data from Maike Kittelmann.