darkSpyro

Anyone does this before?
You go to that boat that takes you to Luau Island but stand on the edge of that little island and do a hornbash right on the edge between the land and the water. Keep trying and eventually Spyro will just shoot upwards instead of down and now you're swimming in the sky instead of in the water.
Then you can swim anywhere in the Dragon Realms. It's like free-flight mode, except you're swimming. You can swim through the castle and out of the world, places the game didn't want you to go to. Its one of the 'good' glitches this game has.