Dean had just broken the surface again gulping down air rather more forcefully than before, having pushed how long he could hold his breath because the second ring had shifted a couple of times as he moved the water with his hands. Of course that would be when Susan decided to make her presence known. He flung the yanked the troublesome ring off his forearm and tossed it in her direction. It was an automatic response, he didn't like being surprised, but he also knew that she might interrupt at any time he was here, and as accurate as his throws usually were she probably had more than enough time to dodge anything he threw at her.
He rolled his eyes and did gentle breast stroke to the side of the pool near to where she was standing. "Hello to you too," he said sarcastically.