In this paper,the surface microstructures of suckers and endoskeletons in seven species of Cephalopods,were observed by the scanning electron microscopy. Three samples from each structure were fixed with 2. 5% pentanediol,and then,the suckers were cut,and endoskeletons were separated into 0. 5 cm ×0. 5 cm small pieces. All small pieces were dehydrated with 30%,70%,95% and 100% alcohol before observation by the scanning electron microscope. Samples were measured and pictures were taken after observation. The...