Most people see slugs as “slimy, slow-moving” pests, but these creatures play surprising roles in nature and science.

In ecosystems, slugs are recyclers. They feed on decaying plants and fungi, turning waste into nutrients that enrich soil. Without them, “gardens and forests would be overwhelmed with waste.”

They’re also vital prey for birds, frogs, beetles, and hedgehogs, helping sustain entire food webs. Their presence keeps ecosystems balanced and healthy.

Outside the wild, slug mucus has gained attention in skincare. Though unpleasant to touch, it “hydrates, repairs, and protects human skin,” making it valuable in creams and serums.

Science is also unlocking more uses. Their slime inspires research into “medical glues and wound treatments,” offering safer alternatives to stitches. Meanwhile, studies of their simple nervous systems give insight into memory, learning, and neurological diseases.

Slugs may not be admired, but from enriching soil to advancing medicine, their role is far more important than their slimy reputation suggests.