Seirena Lykos Thalassa

Σειρην   
Dangerous demi-goddess who lured nearby sailors with her enchanting music and singing voice to shipwreck. 
Rena: In Hebrew the word for joyous song.

Θαλασσα   
Primeval spirit of the sea and daughter of Aether (Bright Sky) and Hemera (Day).  
Mother of the storm gods and the tribes of fish.