using pieces of skin excised from the East Pacific ruby octopus (Octopus rubescens). These skin samples are loaded with pigmented cells called chromatophores. When a tiny radial muscle contracts ...

So, they captured several East Pacific ruby octopuses (Octopus rubescens) and tested them to see how much energy they used up when changing colors. "Our results show that the octopus chromatophore ...

Different types of cephalopods have different concentrations of chromatophores. Shallow water octopuses like the species used in the study (Octopus rubescens) have about 230 chromatophores per square ...