The whales and the dolphins loved a good fight. The dolphins would nip the tails of the whales. The whales would butt the dolphins with their heads.
They were always larking about like this, and they loved every minute of it. Just swimming around would be so boring. But Johnny the goldfish, who worried about everything, didn't like it when they were fighting.
One day, when the whales and dolphins were having an especially good battle, he swam between them.
Let me try and arrange peace between you," he said. "Absurd," said the whales. "Ridiculous," said the dolphins. "Can't you see what fun we're having? Go back to the seabed."