I love sharks, absolutely love them to death. My favorite would have to be the zebra shark, probably because back in Baltimore, where I'm originally from, the aquarium was sort of a safe haven for me, and it was my favorite shark to watch. I've done some research on it- a docile, slow moving [as they all are, of course, capable of quick bursts, however], bottom feeder [molluscs, crustaceans, and small fishfrom the substrate] that grows up to roughly 230 cm, or 7.5 feet, give or take. My being 18 presents a problem in that I don't yet have the funds to take on this kind of an operation, but this has been a very long time interest, especially considering that I'll most likely get a PhD in marine biology. Just try and stop me. 
The basic thing I want to get covered before any more consideration takes place, so I can jot this down as realistic [ie. I'll easily accomplish it] or impossible [ie. I'll have to mow some people down to buy DiY equipment in Home Depot]. Maybe I have the wrong area, but this does fit the Setup topic. What size [gallons, please?] tank/pool should I have to take on something like this? I already know from the aquarium that anywhere from 5 - 7 feet is a good maximum depth, but what kind of width and length should I be going for? If you have any real idea, because I'm not looking to kill the thing the first day I have it if I ever get it, could you also give an educated statement on a good salinity content, filtration, and the like? It may be asking a lot, and I can come up with a lot of ideas of my own, but I don't have experience, tenure, or any of that.
If you can't help, thank you anyway, I'm going to be asking around in places such as the pet shop a couple blocks away, maybe even an actual aquarium if I get the opportunity. Thanks.
The basic thing I want to get covered before any more consideration takes place, so I can jot this down as realistic [ie. I'll easily accomplish it] or impossible [ie. I'll have to mow some people down to buy DiY equipment in Home Depot]. Maybe I have the wrong area, but this does fit the Setup topic. What size [gallons, please?] tank/pool should I have to take on something like this? I already know from the aquarium that anywhere from 5 - 7 feet is a good maximum depth, but what kind of width and length should I be going for? If you have any real idea, because I'm not looking to kill the thing the first day I have it if I ever get it, could you also give an educated statement on a good salinity content, filtration, and the like? It may be asking a lot, and I can come up with a lot of ideas of my own, but I don't have experience, tenure, or any of that.
If you can't help, thank you anyway, I'm going to be asking around in places such as the pet shop a couple blocks away, maybe even an actual aquarium if I get the opportunity. Thanks.
Anyway, I had the pool idea as well, though the one out back is, in my opinion and all likel[i/y?]hood, too small for anything bigger than a horn shark, probably that too; It's roughly averaged 4.5 ft deep, 20 feet long, and 8 feet wide.