The title "Die Schwiegermutter" (The Mother-in-Law) is derived from the name sailors give to a channel buoy. The mural is dominated by the porpoise in the foreground and is part of the NORD:SYD Freiraumgalerie 2025.

| Access | Public |
|---|---|
| Date created | 2025-06-27T10:00:00.000Z |
| Camera used | Apple iPhone 17 Pro Max |
| Photographer | Volker Kemmling |
| Artwork type | Mural |
| Artist nationality | Germany |
| Building | House |
| Marker type | artwork |
| City | Flensburg |
| Country | Germany |