In a rather interesting dream I had last night, while this was not the main character of the dream it was the one with the most significance and the one that I remembered the most. The other characters were pretty basic and not special in any way...

I can't remember if twas male or female... Though in the dream, he was called by the other creatures to teleport them through time.... Though basically the dream was a weird cross between Orcas, Ecco, and Free Willy. It also had Okura in it....

Basically the Time porter is an oddly marked cross between an hour glass and a bottlenose phin, oddly marked, with a defining black star on his/her dome.