Although they are invisible to the unaided eye, tiny green algae called Ostreococcus play a big role in how carbon, including carbon dioxide (CO2), cycle through our world. Researchers have sequenced and analyzed the complete set of genes (the genome) of 13 members of a natural Ostreococcus population. The analysis revealed that the O. tauri population is larger than anticipated. It’s also diverse in terms of its genetics and appearance. The algae’s natural resistance to ocean viruses influenced the algae’s diversity.