Sea urchins have no eyes yet they can find dark crevices in which to hide and avoid predators. But how? Researchers led by Sönke Johnsen, a marine biologist at Duke University did a genetic analyses of sea urchins and found that they had light-sensitive molecules on their tube feet and in tiny stalked appendages found [...]

The irreducible complexity argument was developed by Michael Behe and first used in his book Darwin's Black Box. The argument is that some biological systems are so complex that they can not have evolved though mutation and natural selection; it you remove one peace, it brakes, it no longer functions. Creationists often use the analogy [...]

Expelled Exposed has made a video about the evolution of the eye. And cdesign proponentsists say the eye is to complex to have evolved.