Ocean-meaning names often come from coastal cultures. Irish gives Muir, Japanese gives Kai and Umi, Hebrew gives Miriam with its 'sea' root. The theme crosses traditions because the sea shapes every culture that lives beside it.
Ocean names and modern naming
Water names fit easily into the broader nature-name trend of recent years. Kai, River and Marina all sit comfortably alongside Rowan, Willow and Sage. They share a spacious, outdoors feel.