| Das verratene Meer | |
|---|---|
| Opera by Hans Werner Henze | |
 The composer in 1960 | |
| Translation | The Betrayed Sea |
| Librettist | Hans-Ulrich Treichel |
| Based on | The Sailor Who Fell from Grace with the Sea by Yukio Mishima |
| Premiere | 5 May 1990 |
Das verratene Meer (The Betrayed Sea) is an opera in two parts and 14 scenes, with music by Hans Werner Henze to a German libretto by Hans-Ulrich Treichel, after Yukio Mishima's novel The Sailor Who Fell from Grace with the Sea (Japanese: 午後の曳航, romanized: Gogo no eiko). Composed between 1986 and 1989, it was Henze's ninth opera, his third that he wrote for the Deutsche Oper Berlin.