So you've been there personally?! And when you say half-fish have human do you mean merpeople, or fishpeople? For that matter, what do you mean by "wanted" - they can shift? Can merpeople walk on two legs? Do you break water or air- well no it's in a bubble so of course it's air but then why would they be merpeople? And you don't know which between magic and technology?! Not even a guess?!