What is a common challenge faced specifically during night wreck diving?

Limited visibility is indeed a common challenge faced during night wreck diving. At night, natural light is significantly reduced, making it difficult for divers to see their surroundings clearly. This limited visibility can be exacerbated in wreck environments where structures may cause shadows or conceal hazards. Divers rely on artificial light sources, such as dive lights, to navigate and observe the wreck. However, using lights can also create shadows and distort perception of distance and size, further complicating navigation and situational awareness.

While increased risk of entanglement, higher amounts of marine life activity, and colder water temperatures can also pose challenges during diving, these factors may not be as specifically pronounced during night dives. Entanglement risks exist in general diving situations, but visibility issues amplify these dangers at night. Marine life activity can vary with conditions and is not exclusively higher at night, and water temperatures can fluctuate but aren't inherently linked to the phenomenon of night diving itself. Therefore, limited visibility is distinctly challenging in the context of night wreck diving.