How can ambient light affect night diving visibility?

Ambient light plays a crucial role in night diving, particularly in how it can affect visibility. When there is excessive nearby light, it can create glare or reflections that distort your vision underwater. This phenomenon occurs because the light interacts with particles in the water, causing confusion and visual discomfort. As a result, divers may find it challenging to focus on details in their environment or perceive hazards effectively.

In contrast to other options, which suggest either no effect or improvements in visibility, it's important to understand that the unique conditions of night diving mean divers are heavily reliant on their ability to see clearly in low-light environments. Thus, managing ambient light is essential for ensuring safety and maintaining clear visibility during dives.