Which of the following is a common hazard when wreck diving?

Obstacles inside the wreck represent a significant hazard when wreck diving due to the complex and often unpredictable environment that divers may encounter. Wrecks can contain a variety of dangers, including sharp edges, entanglement hazards, and unstable structural components that may collapse or shift. These obstacles can pose serious risks to divers, such as injury or becoming trapped.

While decompression sickness, ocean currents, and strong underwater vegetation can also pose hazards during dives, the specific risks associated with navigating inside a wreck are particularly pertinent. The confined spaces and debris found within wrecks can complicate a diver's ascent and overall safety, making it crucial for divers to be trained in proper wreck diving techniques and safety measures. Understanding these internal hazards is essential for avoiding serious incidents and ensuring a safe dive experience.