Caterpillar, El Morro National Monument, 2015.
Summary
Scientists have discovered that some caterpillars can whistle! How? You see, insects breathe through spiracles (i.e., the holes in their sides that you see in this photo). After some experimentation, it has been discovered that the caterpillar uses its spiracles to whistle, thereby startling a predator who thought the caterpillar would be easy prey.
Tags
Date
2015
Source
National Parks Gallery
Copyright info
Public Domain Dedication