If someone is drowning, here are some first aid measures:
Call emergency help immediately: Call your local emergency number (such as 911) and tell them someone is drowning so professional rescuers can Be able to get to the scene as quickly as possible.
Get the drowning person out of the water as quickly as possible: If you are able to swim and it is safe, you can try to swim to the drowning person and pull them out of the water. If possible, use life-saving equipment (such as lifebuoys, floats) to provide additional buoyancy and support.
Check breathing and heartbeat: As soon as you remove a drowning person from the water, check their breathing and heartbeat. If a drowning victim is not breathing or having a heartbeat, begin cardiopulmonary resuscitation (CPR) immediately.
Perform cardiopulmonary resuscitation (CPR): If you are familiar with CPR procedures, begin chest compressions and artificial respiration immediately. Perform chest compressions and artificial respiration in the correct order and frequency until professional rescuers arrive on scene.
Seek professional medical help: Even if a drowning person regains breathing and heartbeat, he or she still needs to seek professional medical help immediately. Drowning can lead to a range of serious health problems, including lung infections and other complications.
Please remember that the above measures are for reference only. In an emergency, try to seek help from professional rescuers and perform first aid operations according to their instructions. Prompt first aid measures can greatly improve a drowning victim's chances of survival.