During the era of the PsOne Artdink was one of Sony’s biggest supporters. Their unusual games had players control cavemen, direct a walking domino, and dive into the deep blue, before Akria created Everblue. The latter game was called Aquanaut's Holiday (pictured) and it was a first person underwater exploration game. Sony Computer Entertainment published it over 10 years ago.
They might be publishing a remake since Play-Asia has the curious addition of a PlayStation 3 game called Aquanaut's Holiday in their database. The proposed game is scheduled to come out on September 25, 2009. The year could be a typo since Play-Asia also lists the Japanese version of Trusty Bell: Chopin no Yume for release next year. However, the game is likely to exist. Recently, Play-Asia has been reliable with leaks for Afrika and Initial D: Extreme Stage.
Images courtesy of Sony.