Dugesia

Dugesia is a genus of freshwater flatworms commonly known as planarians. These soft-bodied invertebrates are often studied in biology due to their remarkable regenerative abilities; they can regrow entire bodies from just a small tissue piece. Dugesia species have simple, bilateral bodies with a triangular head and a pair of eye spots that help detect light. They feed on small microorganisms and organic debris, and their nervous system includes a basic brain and nerve cords. Often found in ponds and streams, Dugesia serve as important models for studying regeneration, development, and neural function in science.