The old classroom strategy to hide from a teacher seldom works – teachers have evolved sharp eye on spotting the wannabe invisibles. European cuttlefish do better: check out the amazing picture above: it is almost too funny to be true.
Barbosa A et al. 2011.Cuttlefish use visual cues to determine arm postures for camouflage. Proc. R. Soc. 279: 84-90