What might a diver carry to improve safety during a dive?

Carrying signaling devices during a dive significantly improves safety by allowing divers to communicate their location and status to teammates and surface support. These devices can include items such as whistles, inflatable signaling tubes, or dive safety sausages, which can be deployed to signal for help or indicate the diver's position, especially in cases of low visibility or emergencies. Effective communication is crucial in underwater environments where traditional verbal communication is not possible, and signaling devices help ensure that divers can get assistance when needed and maintain group cohesion.

In contrast, while extra weight belts can assist with buoyancy control, they do not enhance safety directly. Signal mirrors, although useful for surface signaling in certain situations, are less effective underwater where visibility may be limited. Underwater fishing gear may not be related to safety, as it pertains more to recreational activities and does not address the communication needs or emergency signaling that is paramount for diver safety.