Why is it important for divers to have a dive light during a night dive?

Having a dive light during a night dive is crucial primarily for illuminating surroundings for better navigation. At night, visibility underwater can be significantly reduced, and without adequate lighting, divers may easily become disoriented or lose track of their surroundings. A dive light helps divers see their immediate environment, including the seafloor, coral structures, and entry or exit points, ensuring a safer and more enjoyable diving experience.

While attracting aquatic life can be a benefit of using a dive light, it is not the primary purpose, and conserving battery power isn't relevant to the necessity of having a light. Additionally, while there may be regulations concerning diving equipment, the primary role of a dive light is focused on enhancing visibility and safety during night dives. Thus, the ability to effectively navigate through illuminated environments is essential for safe diving practices.