Every season of The Blue Sea ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of The Blue Sea!

An action drama that tells the story of a mysterious young man who lost his memory. Jo Eun Hee is a female soldier in the navy who works with Sung Ki Soo to carry out special missions under UDU (Underwater Demolitions Unit) Sung Ki Soo is a navy lieutenant who is also a professor at the non-commissioned officer department who is the first to see through the identity of the young man who lost is memory.

The Best Seasons of The Blue Sea

The Best Seasons of The Blue Sea