The term "Certified Divers" refers to individuals who have undergone training and obtained certification in scuba diving from a recognized agency or organization. This means that these individuals have met specific requirements, including knowledge development, confined water sessions, and open water dives, to become competent divers capable of conducting safe and responsible dives. The certification is usually valid for a certain period of time after which the diver needs to renew their certification by completing a refresher course or taking additional training. Being a "certified diver" is an important designation that indicates a person's level of competence in scuba diving and allows them to dive with other certified divers, as well as rent equipment and participate in guided dives at various locations around the world.