The story-line was GREAT! I loved the Island Jeju it was so beautiful, they made sure to show how truly breathtaking this Island can be, and i feel they respected the people by showing their way of life as Divers in a manner easy, to love, understand and appreciate. I loved the actors so much, They put in a "Lot" of hard work and effort into their roles, some even over coming fears and cultural differences such as language. All to achieve the direction that the director chose so as to open people's eyes everywhere to Jeju and it's hard working people...I believed he succeeded in showing this Island and it's people up close and personal, because I otherwise would've never known about these things if not for this wonderful Drama (I can't help but to repeat myself lol)! The CG was awesome and i felt like i was there with them swimming in the ocean, and yes i enjoyed the action scenes very much! Great Job! Thank you everyone that made this possible, I enjoyed it greatly! Bye the way did you know the also made a special(hence why i said 17 ep)that gives some information on the actors(w/their points of view), Jeju Island and what it took to make this Drama. I hope you find this helpful! ^__^