After brachiopods then what?

[SHOVA RANI DHAR]

I posted earlier outlining my research in brachiopod energetics and to my 
dismay no one seems to have any interest in this topic. I am in the writing 
up stage and I realize how isolated I have been throughout my research. I 
would like to continue my career in science but perhaps not in this 
immediate field and definitely not with these animals.  How difficult is it 
to 'switch horses' in your research?  Will this hinder PhD placement?  Any 
advice would be greatly appreciated.