Why is running out of air at depth particularly dangerous?

Running out of air at depth is particularly dangerous because it can lead to rapid ascent. When divers find themselves with low or no air supply, the instinctual response may be to swim quickly to the surface to breathe, which can result in a rapid ascent. This involves significant risks, including the possibility of barotrauma due to expanding gases in the lungs and an increased chance of decompression sickness, also known as "the bends," resulting from failing to conduct a proper ascent with safety stops.

Furthermore, it can also lead to disorientation since the diver may become panicked or confused in high-stress situations. While not having enough air is something that divers should strive to avoid through diligent planning and monitoring of air supply, it is important to recognize that emergencies do happen, and knowing how to respond safely in such a situation is crucial for diver safety. Hence, understanding the dangers associated with air loss at depth is vital for any diver.