Talking female dolphin heroine

Working hard on the movie script for 'Rage' at the moment. Looking good. And of course, getting ready for Christmas. It's surprising that no one wants a Jesus book for Christmas, especially mine :-(
https://www.createspace.com/3783797  (Bethlehem Fiasco)
My 1st and 2nd books were heavy on male characters, with only a few female ones, so for my 3rd I wanted a female heroine...and I got one...I guess...but she's a dolphin. Why?
1: I thought a dolphin character would be good, considering it was set in Atlantis, always connected to water, that legend, plus it gave an angle on the prejudice/different races theme.
2: I thought dolphins were loved by all...I guess not.
And why a female dolphin? Because when I tried to write a female human, I didn't feel it was 100% true, but a female dolphin was possible. I'd have to live my life as a girl to really get into a female human character...Did I become a female dolphin, then?....Only for a while :-)
https://www.createspace.com/3845760 (Rage of Atlantis)