Definition
The order Charales, commonly known as stoneworts, represents a group of green algae that are closely related to land plants. These algae are multicellular and found mainly in freshwater environments. They have a stem-like structure with whorls of branches, resembling miniature underwater forests. Think of them as the architects of underwater habitats. They provide shelter and food for many aquatic organisms. They're like the foundation upon which other aquatic life thrives.