For many year a dolphin called Jack swam in the water of Pelorus Bay, in New Zealand. He used to leap out from a place near the shore whenever he saw a steamship. He would swin ahead of the ship and guide it through the narrow passage of the bay . This dolphin became world-famous.He seemed to enjoy acting as a pilot in these dangerous waters. He rolled and leaps through the water, and as soon as the ship neared safety, he swam back to his hiding-place