 For example , in the common cuttlefish the display consists of flattening the body , making the skin pale , showing a pair of eyespots on the mantle , dark eye rings , and a dark line on the fins , and dilating the pupils of the eyes . The common octopus similarly displays pale skin and dark eye rings with dilated pupils , but also curls its arms and stretches out the web between the arms as far as possible , and squirts out jets of water . Other octopuses such as Atlantic white @-@ spotted octopus turn bright brownish red with oval white spots all over in a high contrast display . The paper nautilus can rapidly change its appearance : it suddenly withdraws the shining iridescent web formed by its first pair of arms from its shell . 
