The publisher told Pocket Gamer that it's holding back the game "due to sensitivities over the Malaysian Air plane crash," and that it will likely be out in one month.
In the game you scuba dive from a first person viewpoint and kick around under the sea. It looks pretty beautiful, but I'm guessing there are some sunken airplanes to explore. It's understandable why they'd delay it if so.
You'll see more about Scuba Diver Adventures here when it does release.