Gargantia on the Verdurous Planet

Russell, a boy who makes his living off of chasing whale-squids in the oceans off of the land nation Liberistan, meets a strange entity called Liv in the depths of the water. Using Liv's power to greatly increase the control over a Yunboro, Russel is determined to succeed in life in a safe land. Sukaya, the daughter of the cabinet minister of the opposing nation Augustonia, was exhausted from her days in which her efforts would not bear fruit. However, her situation changes when the humanoid robot Ignite awakens and chooses her as its pilot. A boy who holds hope for the land, and a girl who seeks freedom. And so, a new story begins to move in the various lands that the giant ship Gargantia travels to. (Source: Anime News Network)

The story begins in the distant future in the far reaches of the galaxy. The Human Galactic Alliance has been constantly fighting for its survival against a grotesque race of beings called "Hidiaazu." During an intense battle, the young lieutenant Redo and his humanoid mobile weapon Chamber are swallowed up into a distortion of time and space. Waking from his artificially induced hibernation, Redo realizes that he has arrived on Earth, the planet on the lost frontier. On this planet that was completely flooded by the seas, people live in fleets of giant ships, salvaging relics from the seas' depths in order to survive. Redo arrives on one of the fleets called Gargantia. With no knowledge of the planet's history or culture, he is forced to live alongside Amy, a 15-year-old girl who serves as a messenger aboard the Gargantia fleet. To Redo, who has lived a life where he knows nothing but fighting, these days of peace continue to surprise him. (Source: Anime News Network)