The argument that the author makes an ocean noise is that the ocean has many different sounds because there is many different types of species that make different noises in different pitches
the answer is: We had seen an elephant!
They all learn that racism is real and a major problem, they learn not to instantly judge a man by what people say and to gather all the facts. They also learn that it is better to keep quiet than jump to conclusion and they learn the value of friendship and equality
