How often should you check your air supply during a dive?

Checking your air supply regularly during a dive is crucial for maintaining safety and awareness of your underwater environment. The recommended practice is to check your air supply every 5-10 minutes at a minimum. This frequent monitoring allows divers to track their consumption and adjust their dive plans accordingly. By consistently checking their air, divers can ensure they have enough air to complete their dive safely and return to the surface with a sufficient reserve. Additionally, it helps in detecting any potential issues with the air supply or equipment that may arise during the dive.

In contrast, options that suggest checking air less frequently, such as every 15-20 minutes or only at the beginning and end of the dive, can lead to an unsafe situation where a diver may not have enough air to complete their ascent or to address unforeseen circumstances. Checking too infrequently does not accommodate for variations in air consumption, which can be affected by depth, exertion level, and individual breathing patterns. Therefore, monitoring air supply regularly is essential for divers to ensure their safety under water.