[out now] ABZU - from the art director of Journey

Developed by Giant Squid, founded by Flower and Journey art director, Matt Nava.
The name derives from ancient words "ab" (ocean) and "zu" (to know) - intended to be interpreted as "ocean of wisdom" (see also Abzu, ancient mesopotamian name for the religious concept of a primeval sea).

The game is a stylised swimming simulator, with an emphasis on exploring peaceful human interactions with aquatic animals. A simulation of, and interaction with shoaling behaviours of fish is incorporated into the game; predatory behaviours between fish are also modelled. The progression through the game is linear, not an open world sandbox, though the environments are designed to be explored; individual acts of the game are set in different areas of the sea, including caverns, deep oceanic areas, coral reefs and flooded ruins.

Steam
GameSpot review (slight spoilers)
IGN review