Revealing mistake: When Robin is being pulled underwater by Ivy's plants he surfaces for air and gets pulled under again. It's obvious the film was just rewound. Then when he finaly gets free we see the shot that was rewound was the same shot used when he escapes. Really bad editing. (01:34:50 - 01:36:40)
Batman and Robin (1997)
Trailers
Directed by: Joel Schumacher
Starring: George Clooney, Arnold Schwarzenegger, Uma Thurman, Chris O'Donnell, Alicia Silverstone, Michael Gough
More trailers
More mistakes in Batman and Robin
Poison Ivy: I must confess, the combination of heroic derring-do and anatomically-correct rubber suit puts fire in a girl's lips.
Batman: Why do all the gorgeous ones have to be homicidal maniacs? Is it me?
Trivia: Ivy's hair color changes slightly during the movie. In the beginning, it was pure red. During the movie they dyed the wig with orange to get different looks.
More questions & answers from Batman and Robin
Answer: Maybe she drained the cryo-tube first? Maybe she did get wet but had dried off by the time we see her again? Maybe Bane did it for her? Pick whatever answer works best for you. It's a really small, insignificant detail in the film with plenty of potential answers.
TedStixon
Thanks though keep in mind she wouldn't have a clue as to how it works since she's a botanist not a scientist in cyro genetics.
Rob245
She pulled the plug on the thing so Nora died and the tank drained (either automatically or Ivy did it). She just took the necklace off the body.
lionhead