Yep. It would be nice if you could sell your art in the aquarium, etc. because more of the public would know you, be filled eith beautiful art, and you could get a good profit as well. Most pieces like this are at least over ten dollars where I live, I think. Some art even goes up to a hundred dollars per piece or more.
No, but I've been to the gift shop at my local one. I'm old enough to volunteer, though I haven't yet. I'm sure you could find some staff member in your local aquarium to go over this with. It could be a nice start, seems like it'd be worth a try,