Mantis shrimp have the world's best eyes—but why?

As humans, we experience an amazing world of colour, but what can other animals see? Some see much more than us, but how they use this vision is largely unknown: Phys.org (SEPTEMBER 4, 2013) [AMZ]

phys.org/news/2013-09-mantis-shrimp-world-eyesbut.html