Scarlet Seas is a surviving[1] 1929 American synchronized sound romantic adventure film produced by Richard A. Rowland and distributed by First National Pictures.

Although there is no audible dialogue, the film was released with a musical score with sound effects using the Vitaphone sound-on-disc recording process.

It starred Richard Barthelmess, Betty Compson, and a teen-aged Loretta Young.

[5] uncredited The film featured a theme song entitled "Blossoms (That Bloom In the Moonlight)" which was composed by Ben Black and James Dietrich.

A review in Harrison's Reports found that the film contains "offenses to logic", including the nimbleness of the hero and heroine as they climb a rope ladder despite having survived days of hunger and thirst and the way the hero easily overcomes "a giant", lifts him, and throws him overboard.