What might indicate the need for high-intensity lighting during a dive?

High-intensity lighting is often essential in low visibility conditions underwater. When visibility is compromised due to factors like murky water, suspended particles, or sediment, divers rely on bright lights to enhance their awareness of the environment. This is crucial for safety, allowing divers to see their surroundings, communicate with dive buddies, and navigate effectively. In these situations, natural light may be insufficient for visibility, making artificial lighting a necessary tool to ensure safe diving practices.

On the other hand, clear daylight conditions usually provide enough natural illumination, reducing the need for high-intensity lights. A depth not exceeding 10 meters or typical scenarios like normal lake diving do not inherently indicate the requirement for powerful lighting unless specific visibility issues arise. Therefore, the presence of low visibility is the primary reason for needing high-intensity lighting during a dive.