How does limited visibility impact the perception of distance underwater?

Limited visibility significantly alters the way divers perceive distances underwater. When visibility is poor, factors such as reduced light and the scattering of particles can lead to a distortion in how far away objects seem. This phenomenon can cause objects to appear either closer or farther than they are.

In conditions of limited visibility, the human eye cannot adequately gauge distances. The absence of visual references, which are typically available in clearer waters, combined with the effects of light diffusion, can lead to depth perception challenges. As a result, a diver may misjudge how far away an object is. For instance, an object might seem to be right in front of them when it is actually further away, or vice versa.

This misunderstanding can impact navigation and safety underwater, making it essential for divers to be cautious and aware of their surroundings while diving in low visibility conditions. Approaching objects slowly and using other senses, such as touch, can help mitigate these perception errors and increase safety during a dive.