Like I said before I'm not totally giving up on the orca idea. In fact, I have another name registered, so I may make
that character an orca or dolphin.
And, I agree. It would be a unique experience. On another forum I have played a werewolf whose animal form was a maned wolf, and a weretiger (and, yes, I realize Kelvics are not lycanthropes). Playing a killer whale, dolphin or other sea mammal would be very different for me.
But, Mizahar is a very different setting for me. So, as for now I'll stick with a land-based creature... until I get my feet wet.