In order to remain active as a scientific diver, a minimum of _____ dives must be made each year.

To remain active as a scientific diver, a minimum of 12 dives per year is required. This requirement is in place to ensure that divers maintain their skills and stay current with diving practices within the scientific community. Engaging in regular dives allows divers to develop and refine their techniques, build familiarity with the underwater environment, and stay safe while conducting research or data collection.

Regular diving is critical because it helps maintain physiological adaptations to the underwater environment and ensures that divers are comfortable and efficient in their equipment operations. Not diving regularly can lead to a decline in skills, which could be detrimental not only to the diver's safety but also to the integrity of the scientific research being conducted.

While options like a checkout dive or training seminars may be valuable for initial training or skill refreshment, they do not equate to the practical experience gained through actual diving. The focus is on active participation in diving activities over the course of the year, which is why the requirement of 12 dives is set as the standard for maintaining an active scientific diver status.