Im looking for a book but i cant remember the name. Its a fantasy world where there is only one human left and she was a slave to a race of
Thanks for asking! I haven't locked down the exact novel, but there are only so many high fantasy settings that incorporate intelligent whales, and I'm thinking it might be the early-ish D&D universe of Mystara. Take a look at Thorarinn Gunnarsson's "Dragon's Domain", too.