I am a shark biologist and I am very sorry to inform you that wherever you got your information from regarding the blue shark and tiger sharks speed is wrong. The fastest of all sharks is the Shortfin Mako, the second fastest shark is the Porbeagle. Blues would be third and the Tiger is much further down the list. Please, if you're going to make a quiz, at least make sure it is fact NOT fiction!
He's right and can you accept blue fin tuna because there is not a northern blue fin tuna so why put southern. Just keep it simple and accept Blue Fin Tuna
Was mad that I didn't get it after putting bluefin and yellow fin tuna. So I retook it and just copied word for word what it said on the list and it still would not accept the answer. Your quiz sucks.