Where can you find blue green algae?

Blue-green algae, also known as cyanobacteria, can be found in a variety of freshwater and marine environments, including lakes, rivers, ponds, and oceans. They thrive in warm, nutrient-rich waters, often appearing as green, blue, or brown scums on the surface. These organisms can also grow in moist soil and on rocks in damp environments. Their presence is often enhanced by factors such as warm temperatures, sunlight, and excess nutrients from agricultural runoff.