To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1 This is a video of spontaneous waves propagating in an excised intact skin sample from Dosidicus gigas. Myogenic activity and serotonergic inhibition in the chromatophore network of the squid Dosidicus gigas (family Ommastrephidae) and Doryteuthis opalescens (family Loliginidae) Hannah E. Rosen, and William F. Gilly Journal of Experimental Biology 2017. 220:4669-4680; doi: 10.1242/jeb.164160 Download Original Video