The bulk of the shots are blurry, as underwater scenery tends to be, because the gamer (Lavonicus) plays Fallout 4 on a PS4 and thus can't use "noclip" to dispel the effect. And unfortunately, he didn't stumble across any great secrets, although an interesting mystery did come up in the form of a "one of a kind sphere" with some writing on it, half-buried in the muck. It appears to say "New!" but new what? (There's a video showing exactly how to get to the sphere on YouTube, if you want to check it out yourself.)Lavonicus said his travels cover close to 100 percent of Fallout 4's underwater realm, but promised to resume his deep-diving in DLC follow-ups, which he predicted will contain proper aquatic locations. "In the past for Fallout 4 you have shown concept art of underwater content and through mods we have found out there is a Harpoon gun that was supposed to be in the game," he wrote. "It may not be in the game currently, but I know we'll have underwater content eventually in DLC. When that time comes, I'll spend my time combing through the water content of the DLC until I find it." Spoiler