👉 Thalassarchaea are a type of bacteria that belongs to the phylum Thalesauridae, which includes some of the most diverse and complex bacterial species known. They are characterized by their large number of spores, which allow them to colonize new environments. Their role in the ecosystem is crucial, as they play an important role in nutrient cycling through photosynthesis and recycling water, making them essential for maintaining the balance of life on Earth.