For countless people, the insect world is little more than a swarming, amorphous mass of over one million species of tiny bugs. And yet each insect is a distinct animal, a unique and essential part of the great biodiversity.. Rest assured, though, exploring biodiversity and gaining an understanding of this incredible biomass is really child's play. All you have to do is grasp the basics of entomology and systematics: the science of insect classification.