Definition
Hirudinea is a class of segmented worms, commonly known as leeches. These creatures are typically aquatic, though some live in moist terrestrial environments. They are characterized by having suckers at both ends of their bodies, which they use for locomotion and feeding. Many are parasitic, feeding on the blood of other animals. Think of them like tiny, slimy vampires 🧛. Unlike earthworms, they have a fixed number of segments. They play a role in ecosystems, even if they seem a bit creepy. Some leeches are also predators, consuming insect larvae and other small invertebrates.