1.) starfish
2.) Squids
3.) Sharks
4.) Seaweed
As a noun one response to the entire physiological process activating such a movement free any automatic I’m thinking often habitual behavior or response or reflection or image of an object as exhibited by a mirror or the like
If the bill is counterfeit and the paper is wood-based, the iodine in the pen solution will react with the starch and leave a dark brown or black mark.