OC and Rebreather Divers: Quick Quiz

New divers can take a quick quiz to learn about the differences between open-circuit (OC) and rebreather diving. OC divers breathe air from tanks and exhale into the water. Rebreather divers reuse the air by scrubbing out carbon dioxide. Each type has its own techniques and safety measures, making it important to understand which suits your diving style best. This knowledge will help you become a more informed diver.