If a swimmer is having a seizure in the water, what action is most appropriate?

Supporting the swimmer with their head above water until the seizure is over is the most appropriate action in this scenario. This approach prioritizes the immediate safety of the individual experiencing the seizure, ensuring they do not drown or inhale water during their seizure. Keeping their head above water allows them to breathe while reducing the risk of injury from thrashing movements that often accompany seizures.

Additionally, it is essential to stay calm and monitor the swimmer's condition throughout the seizure. This action maintains the swimmer's safety without causing further distress or panic. It is also important to be prepared to provide further assistance once the seizure has concluded, including monitoring breathing and responsiveness to ensure that the swimmer recovers safely.

Other options may not provide the necessary safety for the swimmer. For instance, pulling the swimmer out of the water immediately could create a risk of injury or drowning if the timing is not perfect. Holding the swimmer still could interfere with their ability to breathe and is not a recommended response during a seizure. Clearing the water of other swimmers might be advisable in a broader safety context, but it does not directly address the immediate needs of the swimmer experiencing the seizure.