Cyanobacteria, commonly referred to as blue-green algae, were as ubiquitous as the sea itself. They grouped into myriad formations: thin filaments, flat sheets, hollow balls. They were instrumental to evolution, being the predecessors of modern plants. Early in the earth’s history, cyanobacteria also generated the planet’s first oxygen atmosphere, making the world livable. And since then, they had adapted to millions of ecological niches.
