Wie geht das eigentlich mit Ebbe und Flut?

The tides explained in a way suitable for children! Ralf the frog is on vacation at the North Sea. He falls asleep in a beach chair, and when he wakes up again, he is amazed to find that the North Sea is no longer there. He sets off for the mudflats to get to the bottom of the matter. On the way, he meets Klara, the little shore crab, who, despite a few quarrels, can tell him a lot about high and low tide. This cheekily illustrated children's book explains the mystery of the tides in an entertaining and easy-to-understand way. Why is the water on the North Sea sometimes there and sometimes gone? What does the moon have to do with it? And what role do the water masses of the oceans play? With this entertaining book not only the frog Ralf finds an answer to the many questions!..