A woman diver rides a bike in Verudela Underwater Park near the Istrian coast in Pula, Croatia on Tuesday. /Chinanews Photo

The Verudela Underwater Park offers visitors easy to enjoy diving in the shallow sea and playing under the water about five meters. /Chinanews Photo

This kind of specially designed equipment for visitors, weighing 40 kilograms to keep visitors on the bottom of the sea, is placed just before the descent. A rubber tube connects it to a bank of oxygen, which allows normal breathing and movement. /Chinanews Photo