Dust mites are living creatures, smaller than a pinhead, roaming, blind little things, that look like a walking stomach with a mouthpart.
And Jerusalem crickets are called 'Woh-tzi-Neh' (translated as "old bald-headed man" or "skull insect") by Native Americans. In Spanish, it's called " ñina de la tierra" or "child of the earth," because of its large, bald "baby face."
The Horsehair worm is a parasite which enters and lives inside an insect until the worm matures. It then compels the insect host to seek and enter water, where the horsehair worm emerges and lives out the remainder of its life.
Together, these three children's books explore some strange little creatures found in nature.