👉 Sphaerothecum is a type of algae found in freshwater bodies of water, typically freshwater lakes and rivers, where it grows on the surface of the water. It forms a complex symbiotic relationship with certain types of bacteria that live near its roots, known as mycorrhizal fungi. Sphaerothecum is an important part of the aquatic ecosystem and plays a crucial role in supporting various life forms through photosynthesis.