I found this but I don't know if it is accurate, can someone tell me if it is correcrt or not?
...This is really fun. You need a Pokemon with Surf and a Pokemon with Fly. I used Charizard and Wartortle. Go to Fuschia City and enter the Safari Zone.
Walk for a bit and go back out. When the guy asks you if you're leaving early, say no. You'll automatically go back in.
Go back in again, and say no again. Save your game and shut it off. When you turn it on, go back out of the Safari Zone.
This time, the guy asks you to join the hunt. Say no and walk out of the building. Fly to Cinnabar Island, and go to the coast on the right of the island. Start Surfing, so that it looks like the Seel thingy's half on land, half in water.
Swim along that coast for a while and you'll hear the guy say that your time's up. After the PA's message is over, you'll be back in the Safari Zone. The guy will say have a nice day.
Walk through the exit...and there you have it! You've reached your destination! It may not look like much, but it's fun. It's really, really easy to get stuck though.
If you press start, the background will look different...oh, Pikachu will go crazy and start running around and hiding. It's okay, just find a place to Surf and go back on land.
I moderate a lot of Pokemon forums, 2 to be exact, I love them, but I love Harry Potter games even more!