In fact, the most interesting thing about
> Conus is its ability to change the type and molecular structure of its
> toxin.  Thus making it virtually impossible to cure a person once they have
> been shot.
Yes, apparently the longer they go without eating the stronger and less
prey-specific the poison becomes. Makes sense, really, when you think about
it. Stress (sudden temperature changes, repeated vibration and so on) can
apparently also change the toxin formula.