Underwater， the dog saw a school of fish swim past. He grabbed a fish and carried it back to the pier. The Englishman， surprised and pleased， praised him. After that， the dog followed the man on his dives. In the course of the shared diving， the dog developed excellent fishing skills， to the man' s considerable amusement. The Englishman told the island' s residents of his dog' s accomplishments， and they came to the pier to watch. Delighted， they began calling the dog Pedro， after Peter， the fisherman.