Caption:
Bombardier beetles are little living ÔøObombsÔøO that are very aptly named. The 12-millimeter-long bodies of these coleopterous insects contain a variety of chemical substances, each of which is stored in a separate, carefully sealed chamber. When attacked by an amphibian or a bird, the bombardier opens these chambers, the chemicals mix together and. . . BANG! An explosion of foul-smelling and irritating jets of vapor is released from a small tube at the tip of the animalÔøOs abdomen.