When witnessing a swimmer having a seizure, the ideal response is to clear the area around the swimmer to ensure their safety. This step is crucial because during a seizure, the person may lose control of their body and could be at risk of injury from surrounding objects or other swimmers. By creating a safe space, you help minimize the risk of accidental injury and ensure the swimmer has enough room to move without hitting anything.
Jumping into the water immediately can be dangerous both for the rescuer and the swimmer, as it could lead to further panic or injury in the water. Providing water immediately is inappropriate since the individual is not in a state to safely consume anything during or immediately after a seizure. Rescue breathing, while important in some scenarios, is not warranted in this case, as the primary concern should be ensuring the swimmer's immediate safety and allowing the seizure to pass. Following the seizure, further actions such as checking for responsiveness and seeking medical attention may be necessary.