Sharks are from the planet Pandora. PSYCH! Just kidding they aren’t at all. I was testing you, and you failed. They are from the same planet as Transformers. Cats are actually from the Avatar planet. I can't believe you thought that sharks were gross enough to have grody ponytail sex with everything, only cats are raunchy enough for that.
For so many reasons they don’t need umbrellas, but most importantly because they like rain. And they do not like it because they think it's cool to say that they like it. It’s because they make rain. They shoot out from the water super fast and bust through the clouds breaking them open and making the rain fall out. So obviously they like it.
J.K. Rowling did NOT come up with the Harry Potter story. She learned about shark mythology and then changed the story to be between wizards and muggles, instead of sharks and everyone else.