Or it just hadn't been introduced. "Stranger Sea! Approach, and make yourself known unto us!"
(My old history teacher used to tell a story about his Victorian father being in a train-carriage with strangers. One of them tried to hurl himself out of the moving train; our hero and another man restrained him until the next station, where officials came to take him to hospital; the train resumed its journey. "I asked him once," quoth my teacher, "what they had said to each other afterwards, he and the other man. 'Oh, good heavens,' said my father, 'we didn't speak! We hadn't been introduced!'")
no subject
(My old history teacher used to tell a story about his Victorian father being in a train-carriage with strangers. One of them tried to hurl himself out of the moving train; our hero and another man restrained him until the next station, where officials came to take him to hospital; the train resumed its journey. "I asked him once," quoth my teacher, "what they had said to each other afterwards, he and the other man. 'Oh, good heavens,' said my father, 'we didn't speak! We hadn't been introduced!'")