What does "buddy breathing" refer to in scuba diving?

Buddy breathing refers to the technique where two divers share a single air supply in an emergency situation. This typically involves one diver using their air supply, such as a primary regulator, while the other diver alternately uses the same supply during critical moments when one may have run low on their own air or in the event of an emergency. This method allows both divers to manage their remaining air more effectively and ensures that they can both safely ascend to the surface if needed.

In emergency scenarios, the ability to share air is vital, as it can prevent panic and provide a solution to maintain a safe ascent. Divers are trained in this technique so they can practice proper protocols for communication and coordination while executing the procedure. Understanding buddy breathing enhances safety and teamwork within scuba diving, reinforcing why it’s an essential skill for divers to have when submerged in potentially hazardous environments.