Aww, no love for P. vivax? You have its main buddy mosquitoes, but... well okay a protozoa isn't really an animal, just an animal-like unicellular thing, but still. It's not all just viruses taking the show there. Instead many different flavors of awful, horrible mosquito-borne death. Hooray!
I actually think I've heard about some people attempting to domesticate sharks - the main problem is that to keep something like, say, a dogfish, you need a pretty big tank. And then, well, if you get the rest of the set-up right, it's just about like keeping any other aquarium citizen that likes to snack on critters smaller than themselves.
There are of course really little ones like the Dwarf Lanternfish, but it looks less like a shark, and more like a kindly old relative who has taken upon themselves the task of clearing out your internet history after your death:
"What's this Donkey Show link fo-OH GOD"
Dogfish, a step up the scale of shark size, are actually kinda sweet and pretty popular for 'touch tanks' at aquariums where little kids can dip their hands in and pet the critters. They're pretty friendly and docile. Well, friendly and docile for fishiness. It's kinda hard to tell with aquarium pets since they aren't exactly going to fetch your shoes or sitting on your face in the middle of the night to display affection. And to boot, they have amusingly stupid-cute gormless dumb faces:
"HAY GUISE WATS GOIN ON IN THIS THREAD"
If everyone had the aquarium space available to keep sharks, I wouldn't actually expect fatalities to rise that much because, well, aquariums. I mean, how many people are killed each year by koi or angelfish? There's probably somebody who managed it, but it's also likely hard to do. I expect you probably mean if domestication like the domestication of dolphins etc. was attempted, and, well, orca are just as carnivorous... And it's similarly becoming clear that smart cetaceans are too smart to be kept in aquariums without doping them up and ignoring how unhappy they are. But that's another thread entirely. I don't think sharks are quite that smart - depending on variety, of course - but I don't know how much people have seen about their various levels of intelligence and how 'trainable' they might indeed be.
Myself, the Shark-week-paranoia-busting factoid I've always enjoyed is the fact that consistently more people are killed by vending machines than sharks per year. Because when hungry, people are idiots, and want to get their damn candy bar if it's the last thing they do. Which sometimes it truly is.
