A saltwater croc would beat a great white shark.

Now that I think about it, this argument is kinda unnecessary since there's the system of homeland advantage. Whatever. For the intelligence thing, look it up on documentaries and websites. There are many sources stating the croc's brain power and extraordinary abilities. Anyway, I'm gonna answer each of your comebacks. Unlike an alligator, a crocodile has sensors spread all around its body, detecting movement and vibrations in water. Although the waves might be distracting, the shark is giving off vibrations quite different to the waves. What makes you think that the croc would not be weary of the shark going beneath it? The croc would see the shark going down and would keep an eye on the shark. Although the part about the mouth thing is true, what makes you think the croc would just sit tight, completely aware that shark is charging from below. The croc isn't a sitting duck you know. The croc could easily pull off abrasive maneuvers to avoid the strike. Going at a full speed charge like that, the great white would have trouble going back on course, and would most likely speed by the croc. The only way the shark is gonna get a guaranteed hit on the croc's stomach is if the croc is distracted, let's say trying to get a breath. As I have mentioned numerous times already, a croc could hold its breath for 2-3 hours. Perhaps the fight would "stress" the croc. The minimum amount of the time the breath meter would go to is an hour, in which the fight would have ended, one way or another. Unless the shark has learned some super ninja move that allows it to teleport right under the crocodile, the croc is fully capable of keeping its stomach away from the shark. As you said before, yes I've been going on about the croc biting the shark, but what made you assume I was talking about the body or the tail of the shark? Of course a croc wouldn't be able to bite there. The croc would obviously go for the vulnerable fins of the shark. The shark would of course, need to get close to get in for a bite attempt, and that leaves the fins out in the open. The croc could easily rip off a fin while hiding its underside. With this, the shark is either forced to leave the battle scene, or stays crippled and fight. When it comes to dealing with the unknown, crocodiles are more aggressive and would more likely pull off the first strike. Doing my part of the research, I know that crocs are extremely territory and would not hesitate to take a bite out of an invader. If you studied the shark at all, you'd know that the shark would do a "test bump" to determine if the thing is prey or not. If this was a real life encounter, the croc would more likely engage in battle first. You mentioned about me blabbering about stuff that "can't happen.". Refresh my memory. Unless I misread something, everything up there is kinda true. A crocodile is not completely prone to losing to a shark in its homeland, nor is the shark completely prone to losing in a croc's homeland. Now I'll criticize you. You barely stated any advantages the shark had over the croc. All you mentioned was "the shark is in its homeland," "the shark would easily take a bite out of the croc's stomach," and "the shark's body wouldn't be easily messed with." I answered two of them already. You need to be more specific about the shark being in it homeland. How the scenario would come out is that the crocodile would get the first bite off the shark due to the croc's aggression. With that, the shark would be crippled, and the croc would have the advantage then. Now I think about it, there's absolutely no guaranteed to who would win in a fight, considering all of the "conditions and situations that had to be kept in mind." Anyway, I had a great time for my first debate on here. Thank's for making it a challenge. But seriously, the general question of, "Who would win, a croc or shark?", really could not be answered completely fairly. They each have advantages in their own environments. I could swallow my ego and accept that fact, hope you can. KEEP IN MIND that this is not my answer to the debate. My answer to the debate is everything above the last 6 sentences. Anyway, may the best debater win. :D