These brightly colour sea animals came from over the water where they love their chips (fries) and dips. Mayo and ketchup is their life force. So it would only be natural to have come ketchup flavoured crisps.
Only these are most certainly not natural! They are one of the sweetest crisps I've tasted, ketchup crisps are supposed to be sweet, but Mr zoobidoo took it too far! No salt at all, just sweetener after sweetener.
It's probably a good thing I can't read the ingredients.