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Am Malacol Bull 2008 Dec;26(1-2):19-26

Department of Biology, California State University, Dominguez Hills, 1000 East Victoria Street, Carson, California 90747, U.S.A.,

Light sensitive rhabdoms in the octopus retina increase in cross-sectional area in the dark and shrink in the light. Growth in the dark is due to the formation of microvilli in an avillar region of the photoreceptor cell membrane and lengthening of rhabdomere microvilli already present. Diminution in the light is the result of the disassembly and shortening of the same microvilli. Read More