With an English language title of Lull in the Sea, NIS America has set the release plans for Nagi no Asukara. The company will be bringing out the full twenty-six episode series on June 30th, 2015 priced at $179.99. The release will be Blu-ray only and will have the series dubbed in English as well as the original Japanese across three discs. On disc extras include the clean openings and closings as well as the original trailers. The box set premium edition, which you can see below, includes two soundtracks (31 songs and 29 songs respectively) as well as a 76 page hardcover book.
Plot concept: Long ago, humans lived in the sea. However, some humans defied the Sea God and moved to the land, creating the division that now exists between Shioshishio, the Sea Village, and Oshiooshi, the village of the land. Now, four middle school students from the Sea Village, Manaka Mukaido, Hikari Sakishima, Chisaki Hiradaira, and Kaname Isaki must attend Mihama Middle School on the surface. While getting used to their new lives, these four and their new friend from the surface, Tsumugu Kihara, learn how true bonds of love and friendship can overcome any separation.