Is it true that a person who is unresponsive under the water will be completely motionless?

The assertion that a person who is unresponsive underwater will be completely motionless is false. While it is common for individuals who are drowning to be unable to respond, this does not mean they are completely devoid of motion. Depending on various factors such as their level of consciousness, physical condition, and even reflex actions, a person may show some degree of movement, whether due to struggling, instinctive gasps, or involuntary muscle responses.

In real scenarios, people who are struggling in water may thrash and move in an attempt to keep their heads above water or to reach safety, even if they are becoming increasingly unresponsive. This can sometimes lead to the impression that they have stopped moving altogether when, in fact, they may be exhibiting erratic or uncoordinated movements. Additionally, unconsciousness can also occur in various other situations such as underwater emergencies, and even then, the body may still display some minor movements due to physiological responses. Thus, the notion that an unresponsive person is completely motionless does not accurately reflect the complex nature of drowning scenarios.