This is the beautifully crafted Bioshock themed aquarium built by Tim Baker Creations as part of the Super-Fan Build web series. They did an amazing job (the Big Daddy's mask has lights inside and his drill even rotates), I just wish it had even MORE decorations. Like, maybe a couple piles of debris and dead splicers. Ooh -- and a spider splicer hanging from the ceiling. And some turrets. And a Circus of Values vending machine. OOH -- AND A VITA-CHAMBER. Or a skeleton pirate drinking out of a rum jug, I'm not being particular.
Keep going for a video of the build, but skip to the end if you just want to see the finished product.
Thanks to PYY, who agrees the coolest aquariums are the one with the most bubble-powered animated ghost pirates.