What specific equipment should divers use when descending into dark or low-visibility waters?

Divers descending into dark or low-visibility waters should use a dive light. This equipment is crucial for several reasons. Firstly, a dive light enhances visibility, helping divers see their surroundings clearly in conditions where natural light is limited. It illuminates potential hazards, marine life, or the underwater environment, allowing the diver to navigate safely.

Furthermore, a dive light serves as a communication tool among divers in low light conditions, guiding others' attention to specific points or alerts. Being well-prepared with adequate lighting decreases the risk of disorientation and enhances overall safety during the dive in challenging visibility environments. Therefore, carrying a dive light is essential for ensuring a secure and enjoyable diving experience in dark waters.