NIS America has dated A Lull in the Sea:

Greetings!

NIS America is excited to announce that A Lull in the Sea Standard Edition Vol. 1 and 2 will release July 14 across North America. Each volume of this fully-dubbed, 26-episode series will include 13 episodes across 2 standard DVDs. Both volumes will also include the original Japanese voice acting with English subtitles. A Lull in the Sea revolves around a group of kids who are transferred from their school in the sea to a school located on land. The story follows them on their journey to accept change and learn that true bonds can overcome hardship.

The Premium and Standard Editions will be available at the following select online retailers: Right Stuf, The Anime Corner Store, Anime Pavilion, Collectors Anime, and NIS America Online Store.