Check out these animals, although you'll have to look closely. Why? Because they're invisible! Well ok, maybe not, but they are transparent. Want to know why many of the animals featured below are sea-dwelling creatures? The answer is all about self-preservation. As pointed out by Scientific American's Sönke Johnsen, "almost all open ocean animals not otherwise protected by teeth, toxins, speed or small size have some degree of invisibility."
Suzanne DuBose
