Aquanaut no Kyuujitsu Japan

The ocean is another world. Beneath the surface of the sea, all the sounds and the stress of society are muffled away to nothing. In Aquanaut's Holiday, the player takes the role of a renowned oceanographer has been pushed to the limit by the constant attention of the press, environmentalists, and the government. It's time to leave it all behind, on an open-ended mission to explore one of the last unmapped areas in the ocean and create a new coral reef there.