Definition
The *genus Chara* refers to a group of green algae that resemble underwater plants. Unlike many other algae, they have structures that look like stems and leaves. They're often found in freshwater environments, like lakes and ponds, where they play a role in the ecosystem by providing habitat and food for small aquatic organisms. Think of them as the cool, plant-like algae of the underwater world. They even have calcium carbonate deposits, making them feel a bit crunchy!