Name one common hazard faced by cavern divers.

Silting is a significant hazard that cavern divers commonly face, as it can dramatically reduce visibility within the underwater environment. When divers stir up the sediment from the bottom, it can create a murky condition that makes it difficult to see both the path back to safety and any potential hazards or obstacles in the water. This disorientation can lead to panic or poor navigation choices, which are critical issues in cavern diving where maintaining a clear line of sight to the entrance is essential for safety. In addition, reduced visibility can hinder effective communication between divers, further complicating the situation in an already challenging environment. Other hazards like excessive water pressure and strong ocean currents, while relevant in different diving contexts, are not typically primary concerns within the confines of a cavern dive. Similarly, hypothermia is more dependent on factors like environmental conditions and water temperature rather than a specific risk tied to cavern diving itself.