Flashy iridescent shells might not seem like the best evolutionary strategy for bugs trying to avoid hungry birds. But in recent years, biologists have shown that iridescence—lustrous shifts in ...

Scientists now know how the iridescent green scarab beetle‘s shell get its iridescent hue: A molecular arrangement that reflects light, with the reflected light’s magnetic field oriented like a ...

The striking pattern, which makes the limpet resemble iridescent, shell-less snails that live nearby and are poisonous, is a defense, the researchers speculate February 26 in Nature Communications.