One of the three actresses nicknamed the “Queen of Technicolor” was Maria Montez. (The others were Maureen O’Hara and Rhonda Fleming.)
One of Maria Montez’s films was the 1949 adventure Siren of Atlantis, directed by Gregg G. Tallas. The fun movie also stars Jean-Pierre Aumont, Dennis O’Keefe, and Henry Daniell.
You can.. surprisingly!.. find Siren of Atlantis (Amazon link) on dvd.
Maria Montez, Siren of Atlantis