with articulations in the shell that suggest eyes. In the next gallery, nature seems to have the upper hand in drawings of fish, flowers and birds. But look closely. Ocean waves morph into claws ...

I think the student spent four days examining and at last drawing the fish to learn even more. Fish drawings by the "anonymous student" Source: From "In the laboratory with Agassiz, By a former ...

Then you can draw what you see there. It's essentially a more advanced method of tracing, but you can use it on any surface, including paper or a painter's canvas. With other apps Da Vinci Eye ...

Seriously, we promise that’s not an a 3D-image. So how is it done? This video of another floating fish drawing shows you the way artists play with perspective to create the illusion, which ...

The researchers say the discovery also suggests that fish have been seeing the world in color for at least 300 million years. Rods and cones are cells that line the retina in our eyes. Rods are ...