Harvestmen, also known as daddy longlegs, are arachnids belonging to the order Opiliones. They are often mistaken for spiders but are distinct due to their fused body segments, giving them a more rounded appearance. Harvestmen have long, slender legs and can be found in various habitats, including forests, fields, and gardens. These creatures are primarily nocturnal and feed on small insects, decaying plant matter, and fungi. Unlike spiders, harvestmen do not produce silk and are harmless to humans. They play an essential role in the ecosystem by helping to decompose organic material and control pest populations.