Question: How did they do the scene when one of the sharks ate the bird? I know they used animatronic sharks for any interaction with the people, so did they use the same method for the bird? It was "inside" the shark after all.
Question: Was there supposed to be some more of the scene between Carter and Susan after she had killed the third shark?
Answer: I assume you are referring to the scene after Susan killed the second shark (she was killed before the third shark was killed). The comments LL makes to finish that scene do seem a little out of place with what they were talking about but the film does have a number of scenes cut out. Most of the deleted scenes on the DVD deal with character development and dialogue but there is no evidence the scene was cut as the DVD's deleted scenes dont have any extra footage on that scene or alternate dialogue.
Lummie
Question: I saw on here that Susan did more than just enhance the sharks brain; my question is why? I know the whole purpose of making their brains larger was so that they could harvest more protein, so why did she have to do more than that?; E.g., make them larger etc.? Added to that, if they really wanted more protein then why not just get more sharks? They only had like three at the time, so could they have gotten more, or were they just for practice? Also, why did they use only Mako sharks? Was there something wrong with any other breed, like Great Whites for instance? I'm talking movie-wise, not filmmaking-wise.
Answer: They were about to get shut down, so she speeds up the test against the rules to produce results. It was to cure Alzheimer's, from what I recall, and they needed bigger sharks to get their brains firing up.
Adam BusuttilQuestion: Were the sharks in this movie animated? It shows the whole shark without showing a machine controlling it.
Answer: Yes, when the sharks were shown swimming in the water they were computer-generated. Where they interacted with the actors or other parts of the environment, animatronic sharks were used.
Sierra1 Question: How could the shark see Samuel Jackson just before it killed him? It wouldn't be able to smell him because he had no blood on him plus he wasn't in the water.
Answer: The shark was waiting for them to come that way. It'd already smashed the escape pod. All the shark did was to lure in the water until someone got near enough for it to grab them. The sharks were unnaturally intelligent, so it seems fair that this was a part of their plan.
MortugQuestion: Two questions involving Russel Franklin; Firstly, what was he referencing when he first arrived at Aquatica? It was just before he had the line "I am getting too old" or something to that effect. Second, why does everyone hate him exactly? I can kind if understand the Preacher when he joked saying that Russell was stupid for climbing the mountain, even if it was a joke, but what about everyone else?
Answer: I cannot answer the first part of the question. As for why they hate him, because he is there to see the progress of everything. She was told if she didn't produce results before he left, their research funding would be suspended and they would be out of a job. That's why they hate him.
lartaker1975Answer: From 1977-1984 there was a show called "Fantasy Island." The host, Mr. Roarke, would say "welcome to fantasy island." When he was greeted with "welcome to our island paradise" it made him think of the show and he asked where Tattoo was. In "Fantasy Island" there was a character named Tattoo who would say "the plane boss, the plane" at the beginning of the show. It seemed everyone was too young to get his reference and he said he's getting old.
Bishop73Question: What did Janice mean when she called the sharks "one second generation, and two first generation female", or something along those lines?
Answer: Or it's referring to different ways they modified them. The first generation were the first successful sharks. The second generation they did it slightly different.
Greg DwyerAnswer: Same as family generations. Mum + Dad are 1st generation, Children are second generation, Grand kids 3rd generation etc.
Ssiscool 
Answer: This was a CGI scene.
Ssiscool