On Sunday afternoon, Teo and his family are going to visit the aquatic park. Cleta likes coloured fishes and turtles very much. Paul prefers the hammerfish and the rays. The spiderfish also attracts his attention. Teo remains impressed by the enormous whale skeleton that is placed in the centre of the park main room. How big the whales are! It’s a pity that, according to what his father tells him, they run the risk of extinguishing. They all agree that the most beautiful thing of the park is the tunnel that crosses it underneath the water.