Fishing is a tricky business because fish are smart. Well maybe not ‘smart’ but they can do things to protect themselves from predators who are trying eat them. Scientists at the University of Texas have discovered that the skin of certain fish have tiny nanoscale structures called platelets that reflect polarized light. Polarized light is light that travels in the same plane and that is way light travels through water. By reflecting the polarized light they can appear invisible to a predator and they are most effective when the fish are positioned at an angle similar to the angle at which they are attacked.
The research was supported by the National Science Foundation.