LONDON -- There's a reason you never catch Dementors in water,dit ba gia lon to and it's not because they don't like getting their cloaks wet.
The real reason is obvious: there are far too many magical fish out there that would blast them into oblivion with their tiny, adorable patronuses.
SEE ALSO: 'Harry Potter' fans, rejoice: You can now discover your true PatronusJust look at this one in action:
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OK, so it's probably worth mentioning at this point that fish can't really cast Patronuses (at least not that us muggles know about, anyway).
The little cardinal fish in the BBC Earthclip above -- which went viral after it was shared recently on Twitter -- is actually regurgitating a creature called an ostracod, which gives off that bright blue light when swallowed as a form of defence.
Then again, who knows? Maybe that's what they just want usto think.
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