Highly recommended for those who want to watch something pretty deep and unique pieces of art, very high quality overall product. The animation is great, visuals are amazing and the story is amazing. The scenery is very beautiful (land and sea), character development is there and the drama is great, might poke into your hearts and squeeze it for some tears, if they ain't frozen yet *extra hard wink*.
It's a love story about a god of the sea and a woman that he fell in love with. The theme of love is the strongest in this anime, from the beginning til the very last seconds of the anime. The story isn't rushed, a perfect pace with plot twists that should be quite unexpected if you aren't familiar with it (I believe it could be based on some folk tale, because it's very vivid). There's some school life in this anime, but it doesn't matter that much.
Also in this story there's a lot of lessons to be learned about that the change is always possible if you strive for it and that there can be union even in the opposing sides, if they really put their differences aside and work together as one. Pretty beautiful.