Dagobert sous les mers

It's not easy to become a scuba diver when the Atlantic, Pacific and Indian Oceans are located at the other end of the world! But no matter, Dagobert has a castle built in his kingdom the largest, the most extraordinary aquarium on earth. But can one on a mere whim imprison sharks, an octopus, sea urchins, jellyfish and thousands of fish in a glass cage? Like the fish, do you like water? Then have fun by carrying out a few little experiments that you will find at the end of the book.