If you are interested in sex in water, waterproof vibrators will be a great choice for you. They are designed for masturbation in the shower in the bath or shower, but can be equally well applied for fun with a guy. The only real difference between a normal vibrator and a waterproof one is that its internal workings are sealed, so no water can make it stop working. Before you get one, it is important to decide what you are going to use it for as pool chemicals and salt water can damage toys made of jelly, rubber and other life-like materials. It may also surprise you that lubricant is more important than ever when engaging in underwater acts, as the water washes away natural lubricant. Water-based lubricant should be avoided as it will dissolve.