Proper labeling of scuba cylinders is crucial for safety during dives. Labels should clearly show both the maximum operating depth (MOD) and the gas mixtures in the cylinder, using both feet and meters if possible. This makes it easier for all divers to understand what gas they are using, especially in mixed environments where diverse training backgrounds exist. Additionally, using clear symbols and large, readable text enhances safety and helps divers make informed choices quickly. Keeping labels simple and effective supports better collaboration among divers in different locations.