We see so much red, purple, green, yellow, and orange in the natural world, yet we don't often see the color blue. When we DO see it, it's often just in the sky or at the beach. Why is that? We'll examine what's up with the color blue, and how a majority of plants and animals (except for one cool creature that we'll examine), even the ones that we THINK are blue, are just tricking our brains into seeing that color!