Petra is a female black swan which first appeared on the headlines of German and international media between 2006 and 2008, after it appeared that she fell in love with a pedalo looking like a swan on the Aasee, a lake located in Münster, in Germany.

[1] Petra disappeared at the beginning of January 2009.

Citizens and the media took action to try to find her.

The story of Petra inspired the writing of a book for children, Ebonys Traum, published in 2011.

[2] Petra was seen again during Spring 2013, in Osnabrück, with a new partner, this time an animal.