What action should you take if your buddy goes missing during a dive?

If your buddy goes missing during a dive, signaling for help and waiting at the last known location is the most appropriate action. This is because maintaining your position provides a reference point for your buddy if they are able to return to that spot. Surface searching or calling out loudly may not be effective, especially if visibility is low or noise is drowned out by ambient underwater sounds.

Remaining calm and staying where you are allows you to conserve your air supply and maintain a level of safety while keeping an eye on the surrounding area for your buddy's return. Often, divers may separate briefly but can find their way back to each other if they remember where they last saw one another. Following this methodical approach reflects safety protocols that prioritize the wellbeing of all divers involved.