Your work would sell best in a gallery by a seacoast, perhaps. It would be a good idea to do some online research of galleries, especially in resort areas, to see what kind of work they sell. Be sure your work is insured against theft, fire, damage, etc., because all of those things can happen in galleries (I've had two pieces stolen from galleries and one stolen while in transit via UPS). Don't trust the gallery to insure your work, but if they have insurance for their artists' work, that's a big plus. I got paid back for one of my stolen bronzes by the gallery where it was on display. The other was stolen by the gallery owner himself, given to a mafioso to pay a debt, so the police told me. I never got paid, but he landed in jail eventually. I did finally find the one stolen through UPS on ebay and demanded it back - I had to repay UPS the insurance they'd paid me. Anyway, those are some of my "war stories" - every experienced artist has some, I'm sure.
In your case, I'd look especially in Florida and California for galleries that carry contemporary work. And you should enter them in art shows too - find shows that are contemporary or steam-punk and your fish will feel right at home.
The way to approach galleries is to find out when they consider new artists - some do it all the time, some have a particular month or season when they review portfolios. Your photos are excellent. Put them in a binder with a page telling about them on the side facing the photo. You should have all of your own information (don't worry about where you went to school and that you didn't finish. My degree is in music - go figure). I'm in Ohio and got into a few galleries here locally - didn't sell a thing. Did some advertising in magazines and sold a lot of stuff. You'll need to figure a price that you can live with, that will still be a "reasonable" cost when it's doubled to cover the gallery costs. I usually build in a 30% commission to my prices, and I've managed to talk a lot of galleries down on the commission price - but when you're just starting, you don't have "dicker room." You need to have a "name" first.
Anyway, find out HOW they review art (whether from real portfolios, from CDs or online) and WHEN they review art, and follow their guidelines to the letter. Then the ball's in their court.
If you can afford to travel, it's best if you visit the gallery of your choice before sending your work there to make sure it is what they say it is - in a safe neighborhood with good foot traffic, good sales people and well-displayed art. Check out the lighting of the sculptures - do they have moveable lights they can use to highlight your work? If they only use ceiling fixtures, it isn't as good a gallery and won't show your work as well, but it could be a nice place to start if everything else suits you.
Get a WRITTEN CONTRACT stating how much you're paid for each piece (probably expressed as a percentage) and WHEN you'll be paid. If you look online and see your piece marked as "Sold", mark your calendar for the end of the month and make sure you get paid for it.
You get a "name" by winning awards that are mentioned in magazines, by advertising in magazines, by being featured in magazines - seriously. The nice thing is, once you've advertised in a magazine, if they like your work, they may offer you a chance to have some nice advertising AND an article about you. It's a win-win for them - they get more advertising AND a feature or filler article, and as long as they spell your name and contact info correctly, you're getting a lot more advertising than a simple ad will do.
A lot of artists never advertise - they just depend on galleries to move their work. This is very true of painters. I've always been a "do-it-yourselfer".
There are two huge sculpture shows in Loveland CO every August across the street from each other - Sculpture in the Park, which you have to be juried into, and Art in the Park, where you pay to have a booth selling your work. Your work will get a LOT of attention there because it isn't brown bronze. I had my bright-colored bronzes and some cold-cast porcelains in my booth when I showed there, and people always stopped to rest their eyes after seeing SO MUCH brown bronze - and they bought! I don't know which landlocked state you're in, but it's worth the cost to go if you can afford it. Art in the Park used to be 4 days long - I just went to this website: http://www.cityofloveland.org/depart...culpture-shows
and see it's been cut to 2 days. I know the original organizers quit doing it, so that's probably why it's shorter. There are every kind of sculpture you can thing of there, from miniatures to life-size and monumental. One time during set-up, the crane operator got silly with a monumental eagle with spread wings, and just sailed it around a little as if it really were flying. He was careful, but that was a cool sight!
I stopped doing the Loveland shows because of the time it took - 10 days total, with travel time from Ohio to CO and back again, setup and then show time, and I needed someone to go with me. My hubby went with me for years, and a couple of friends joined me various years, but the cost in time, energy and fuel just got to be too much, so I stopped doing the show.
There are steampunk conventions you might check into. I don't know what price you want for your work, but if it's below $1000, they should sell decently.
There are books on this topic - one I used when I was starting out (over 20 years ago) is called "How to Survive and Prosper as an Artist." A more modern book might be a better help since the Internet has become such a powerful force in marketing in the last 20+ years. Look for some that sound like they'd be useful to you and study them. They were a great help to me.
Sculpture Dolls should have a lot to add to this - she's been much more of a gallery artist than I have and she's in some prestigious galleries.
Hope this helps!