My career options, advice would be great?

I have always wanted to work with Orcas and I would love to do Zoology at University. I am at college now so i need to start sorting out my future. However, I don't have the money to travel to the University needed to do this course as my mother has left me and dad pretty much screwed. Does anyone know of any open universities which do zoology? I live in Devon, England. Any advice would be much appreciated.