Why not let them go into open sea?

A shark that smart and big would probably destroy the ecosystem....I think this question has been asked before and I'm pretty sure that was the general answer

I am sure they imply something like that they would breed and make more smart Sharks, although their intelligence isn't a part of their DNA from what it seems. If not that, then the implication could be that if they escape they will kill a lot of people or and terrorize everybody else at the beaches.

They're super intelligent and may start terrorising human populations


Also, what if they mate with normal Makos and pass on their intelligence?

They kept referring to the sharks as Gen 1 and Gen 2 (the huge female). If the Gen 2 is the offspring of Gen 1 sharks (never really said but let's assume) that implies the changes are partially heritable = smarter wild sharks = more coordinated shark attacks...

Carter touches on it briefly by saying their sharks will have no natural predator if they escape, meaning as aggressive as they are and with their ability to think they will be a constant danger to not just humans, but they'll completely trash the harmony of whatever ecosystem they enter.

The result was Sharknado!!! lol

I read the script recently and it's interesting because there's a lot of content that was cut from the film and NOT included as deleted scenes on the dvd.

Almost all of it involved Susan as after the filmmakers decided to reshoot the ending, they went back and practically eliminated every scene and dialogue that humanized her so you'd feel less sympathetic. Since they didn't have the time and budget to reshoot all of her scenes, they axed them instead which kind of ruined the film because there was so much more depth to Susan's character and personality than the bland and uninteresting version we saw in the final cut. You guys honestly wouldn't believe how much they cut. She was practically the main character and this was her story.

But back on topic, remember when Carter looks out and notices the fences are sinking toward the end? In that scene, Susan gives a chilling monologue about how the Gen 2 absolutely cannot escape. She talks about the early stages to how it will eventually take over the ocean. It was pretty interesting. In fact, you can youtube one of the TV spots and find one of the lines "the oceans will be theirs" from this monologue is featured in it. But of course, it wasn't featured on the dvd.