Algy's amazing adventures at sea

There are lots of things Algy doesn't like. He doesn't like bright colours. He doesn't like birds. But at the top of the list of things he doesn't like is the sea. So when Algy, his best friend Cherry and her little brother Brad discover that the shed at the bottom of the garden is taking them on an ocean adventure, he isn't very pleased. But will the sea turn out to be more fun than Algy always thought it was?