Which of the following are common signs of a diver in distress?

A diver in distress often exhibits specific signs that indicate they are struggling and require assistance. One of the most common signs is difficulty staying afloat, which may be accompanied by signals for help. These signals can include raising an arm, waving, or other motions intended to alert nearby divers or surface personnel that they are in trouble.

In contrast, calm behavior and control, natural swimming motions, and ignoring the buddy system do not typically signify distress. A diver who is calm and in control will display no signs of urgency or struggle, and natural swimming motions indicate the diver's ability to navigate the water successfully without assistance. An inability to adhere to the buddy system may suggest other issues but does not directly indicate distress. Therefore, the combination of difficulty staying afloat and actively signaling for help is a clear indicator that the diver is in distress and in need of rescue.