Which method helps to equalize ear pressure while diving?

Equalizing ear pressure while diving is essential to prevent discomfort and potential injury due to pressure changes. The correct answer encompasses several effective techniques that divers can use to achieve this balance.

Swallowing helps open the Eustachian tubes, allowing air to move into the middle ear, thereby equalizing the pressure on either side of the eardrum. Yawning serves a similar purpose by essentially stretching and moving the muscles around the Eustachian tubes, promoting equalization.

The Valsalva maneuver involves exhaling gently against a closed nose and mouth, which increases pressure in the throat and helps push air into the middle ear. This method is often used by divers to forcibly equalize ear pressure in a controlled manner.

Since all three methods can effectively help equalize ear pressure, the comprehensive choice of all of the options provided is the most accurate response. Each method serves to mitigate the effects of pressure changes that divers experience as they descend and ascend in water. Understanding these techniques is crucial for safe diving practices.