Here's a tongue-twister for you: Crafty cuttlefish can complete contours to carefully choose camouflage. What this means, without all the alliteration, is that the visual systems of these ...

One background was gray dotted with white outlines of circles about 0.2 inches (6 millimeters) in diameter. ... [See Photos of Camouflaged Cuttlefish] In another background, ...

A giant Australian cuttlefish blends in with its surroundings. A cuttlefish takes on a "blocky" camouflage pattern on a background of white circles, both complete and incomplete. When the circle ...

One background was gray dotted with white outlines of circles about 0.2 inches (6 millimeters) in diameter. ... [See Photos of Camouflaged Cuttlefish ] In another background, ...

The cuttlefish responded by displaying crude white squares on its back. Soon, we may be able to perform similar feats, thanks to the work of Jonathan Rossiter and Andrew Conn , engineers at the ...

That is, colors that would look the same shade of grey in a black and white photo. In front of these low-contrast checkerboards, the cuttlefish just turned a single solid color.