Anna464 Asked: Do you know this tv show?

I remember it since I was a kid so this might not be accurate:

The show is about a girl (posebly a princess) who is suppost to be looking for these (energy)crystals. She has this dog with her that can sprout wings or a (fish)tail for each occasion. (Remember when the dog ran into a cat-fish and they had a little chase)
If I remember right there was a witch-like woman on the girls trail after the crystals for her master.
The girl might also have had some sort of a psychic link to some sort of a whale.

If you know this show plz tell me it's name.
Thank you