### Identification At first glance, *Aeolosoma hemprichi* looks like a stray, vibrating thread, but under a 10x lens, its true beauty emerges. This microscopic annelid (typically 1–3 mm) is entirely transparent, save for a striking constellation of brilliant crimson or orange-red spots. These are integumental glands scattered across its body, appearing like microscopic polka dots. Its head (prostomium) is wider than its trunk and flattened like a spade, fringed with fine cilia that beat rhythmically. To distinguish it from similar-looking flatworms like *Stenostomum*, look for its hair-like bristles (*chaetae*) and its distinct, gliding "hovercraft" motion.
### Habitat & Range A cosmopolitan traveler, this species is found globally in freshwater environments. Look for them in the "biofilm" of stagnant ponds, slow-moving streams, and even home aquariums. They thrive among decaying leaf litter and submerged mosses, often congregating on the undersides of lily pads where organic "snow" settles.
### Behaviour Watching *A. hemprichi* is a lesson in fluid grace. It glides smoothly over surfaces using its ciliated head to create a cushion of water. Most strikingly, you will often see "chains" of worms. This is paratomy, a form of asexual budding where a daughter worm grows directly from the tail of the parent. Before the first clone fully detaches, it may start growing its own bud, creating a living, multi-generational locomotive.
### Diet These worms are the janitors of the micro-world. They use a muscular pharynx to "vacuum" up bacteria, unicellular algae, and organic detritus. The beating cilia on their heads create a miniature vortex that draws floating food particles directly into their mouths.
### Fascinating Fact Those iconic red spots aren't just for show; they are actually acidic secretions stored in specialized oil droplets. Scientists believe these "polka dots" act as a chemical defense, making the worm taste bitter and unpalatable to larger predators like hydras!