Currently available on 4 streaming services.

Streaming, rent, or buy The Legend of the Blue Sea – Season 1:

Currently you are able to watch "The Legend of the Blue Sea - Season 1" streaming on Netflix, iflix, Viu, Max or for free with ads on Viu.

Cast

Jun Ji-hyun
Shim Cheong / Se-hwa
Lee Min-ho
Heo Joon-jae / Kim Dam-ryeong
Lee Hee-jun
Jo Nam-doo / Park Moo
Shin Won-ho
Tae-oh
Lee Ji-hoon
Heo Chi-hyeon
Hwang Shin-hye
Kang Seo-hee
Choi Jung-woo
Heo Gil-joong
Na Young-hee
Mo Yoo-ran
Shin Hye-sun
Cha Shi-a
Moon So-ri
Ahn Jin-joo
Sung Dong-il
Ma Dae-young / Mr. Yang
Park Hae-soo
Hong Dong-pyo
Krystal Jung
Min-ji
Shin Eun-soo
Young Shim Cheong
Kal So-won
Child Shim Cheong
Jinyoung
Young Heo Joon-jae
Jeon Jin-seo
Child Heo Joon-jae