The sensible giants exercised on an island. The giants wanted to swim in the ocean surrounding the island, but there were many sea animals that would interrupt their exercise. The sea animals never understood swimming as exercise. For the sea animals, swimming was as natural for them as walking was for giants. The giants decided to communicate with the sea animals, and they came to an agreement; the sea animals will allow the giants to swim uninterrupted if the giants agreed to play with them in the ocean sometimes. Since then, the sensible giants and sea animals have been happy exercising, swimming and having fun!