[gweinberg]

One of the more ridiculous concepts in a completely ridiculous movie. The frogs and fish that "change their sex" just change what kind of gametes they make in their splooge. Totally re-plumbing their insides would a completely different kettle of fish.

[kortex]

It's a plot point which drives the entire narrative. If we took out ever sci-fi element that was scientifically implausible, you'd take out a hefty chunk of sci-fi.