Alright, after doing quite a bit of reading it doesn't seem like there are any aquatic lizards that would be able to thrive in the type of enclosue I want to set up. There do seem to be a few aquatic snakes that would like it though. The ones I've found so far are the Masked water snake, Chinese water snake, and yellow and green anacondas. Masked water snakes would definitely work, but I think Chinese water snakes are a bit too small. As much as I would love to have an anaconda, I see absolutely no point in the future where I would have the capability or desire to house a snake that large. If anyone knows of any other aquatic constrictors, I'd like to hear about them. It should also be pointed out that Masked water snakes are the snake that is shown in the first picture of the kind of enclosure I want to do.