Recreational scuba certification levels are the levels of skill represented by recreational scuba certification. Each certification level is associated with a specific training standard published by the certification agency, and a training programme associated with the standard., though in some cases recognition of prior learning can apply. These levels of skill can be categorised in several ways:
Certification indicates that a diver was assessed as meeting the minimum requirements in the prescribed range of skills for that certification by an instructor registered by the issuing agency at the time of assessment. Most certification is not limited by time, and does not require periodical reassessment, or even that the holder maintains the minimum level of specified skills, but there are exceptions, which may be indicated by an expiry date on the certification card. Certification requiring periodic update usually indicates a requirement to re-register with the agency and payment of membership fees, but may also be associated with a requirement to provide evidence of skill retention. This is common for dive leadership certification where the holder is in a position of trust or legal responsibility to clients, where the agency needs to maintain a level of due diligence.