Suisei no Gargantia: Haruka, Kaikou no Tenchi

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. Suk