Final answer:
A swimmer in distress may show signs like feeble attempts to swim or uncoordinated movement, and may not be able to call for help due to airway spasms. Motionless in the water is also a critical sign. The first action is to get the victim to safety before starting CPR.
Step-by-step explanation:
An injured swimmer can often be recognized by specific behaviors and physical signs. These can vary based on the severity of the injury and the swimmer's state of panic or physical ability to respond. Some signs of a swimmer in distress may include making feeble attempts to swim, displaying an awkward position, or showing signs of panic, which could include flailing or uncoordinated movement. They may not be able to shout for help due to muscular spasms that seal their airway, preventing the passage of air as well as water. A swimmer who is motionless in the water is also a sign of distress and should be investigated immediately. It is important to act swiftly, as someone in trouble in the water may be unable to attract attention in a substantial way.
In contrast, an individual climbing the ladder is not usually a sign of a swimmer in distress. When someone is drowning, the first priority is to remove them from the water; only after they are on stable ground should CPR be administered, as CPR is ineffective in the water. Additionally, divers should always heed warnings and avoid diving into shallow water, as it can lead to serious injuries to the nervous system.