No. The water is very shallow, usually about 10” deep. Besides, it is much heavier than ordinary water because of the 1100 lbs of Epsom salts, so you float very easily and much higher in the water than in a swimming pool or another body of water. You float on your back with absolutely no effort, and there is no tendency to roll over. Actually, people often sleep in float tanks. The worst that can happen is getting woken up by a bit of salt water in your eyes.