BELFAST, Maine (AP) — A 25-foot inflatable duck named Joy disappeared over the weekend, as mysteriously as it arrived, after bringing days of delight to a seaside Maine community.

The rubber ducky was removed from the harbor sometime Saturday, likely because of concerns about Tropical Storm Henri, Belfast Harbor Master Katherine Given was quoted as saying in the Bangor Daily News.

Despite the weather concerns, Given said, people were upset to see the duck leave the harbor.

The duck's arrival in the harbor two weekends ago was, and remains, a mystery. But Given said she received an anonymous le...