Oi Thalassies oi Hadres (Greek: Οι Θαλασσιές οι Χάντρες, The Blue Beads) is a 1967 Greek musical film, directed by Giannis Dalianidis and starring Zoe Laskari, Kostas Voutsas, Martha Karagianni, Faidon Georgitsis, Giannis Vogiatzis and Mary Chronopoulou. At the time of its release it was among the most expensive films ever made in Greece and one of the most commercially successful Greek films.