You're swimming on the sea before your legs suddenly stiffen. You keep trying to swim but can't. You are drowning and lose consciousness

You wake up suddenly with coughing and water coming out of your mouth. Your chest really hurts, and your body lying limp.

The person who saved you right in front of your face. You could feel his hand touched you, it looks like he gave you CPR.

"Oh, finally...you ok?" He asked, looking at you worried. While people crowd around you riotously.