- HD 1080
- Runtime: 60m.
- Status: Ended
0
- Languages: ko
- Country: Palau, South Korea, Spain
- Director: Jin Hyuk
- Stars: Jun Ji-hyun, Lee Min-ho, Lee Hee-jun, Shin Won-ho, Lee Ji-hoon
- keywords: con man, mermaid, promise, historical fiction, naive, first love, evil stepmother, based on myths, legends or folklore, hidden identity, past life, interspecies romance, joseon dynasty, cohabitation, joseon
- Production_studio: Studio Dragon, Culture Depot
- Slogan: How can a mermaid from the Joseon era survive in modern-day Seoul?
- Seasons: 1
- Episodes: 20
- First air date: 2016-11-16
- Last air date: 2017-01-25
- providers: Hulu, Rakuten Viki
- The The Legend of the Blue Sea is featured in the top rankings of 2016
- #40 in Top Comedy Series of 2016
- #66 in Top Drama Series of 2016
A mermaid from the Joseon period ends up in present-day Seoul, where she crosses paths with a swindler who may have ties to someone from her past.
