Pokémon Diamond and Pearl Surf glitch/Seabreak Path

The Pokémon games by Game Freak have been known for their solid gameplay as well as a healthy dosage of secrets. Aside from the standard batch of creatures that roam the regions that you travel in, there are always a special few Pokémon that you have the one rare opportunity to challenge and either defeat or attempt to capture. In Pokémon Diamond and Pearl, not only is this still the case, but to an even greater degree. You have a lot more of the rare kind this time around, and you're still given that one measly Master Ball. It's simply something all players of Pokémon games will have to deal with once again.

Getting to Flower Paradise
Sheimi/Shaymin is also acquired in the exact same way, but it's in a different location. It is easier, when you start all over again, to reset your Poketch's steps counter, as you can very easily get lost. You shouldn't have to needlessly lose time, because again, this is a very easy glitch. After you wind up once more in the void outside the door of that same room, walk 200 steps east. Afterwards, walk 363 steps south, totaling 563 steps taken. After that, walk 722 steps east, totaling 1285 steps. From where you stand, walk 19 steps west, for a total of 1304 steps.

Don't think you can shorten the 722 steps east by 19 to reach the same place -- trust me, it won't work. Make sure you go 722 steps east, and only then take 19 steps west. It is important that you follow directions for your safety. Again, go underground with your Explorer Kit, and without moving, immediately resurface. Look at your Map Key Item to help take care of the visual glitchiness you are probably experiencing. You're now below the "Flower Paradise" with Sheimi/Shaymin straight ahead of you.

Shaymin isn't that difficult to catch. It has a catch rate of 45/255, making it relatively easy to capture, much like Dialga and Palkia. You don't want to risk more than you need to by saving at the "Flower Paradise" unless you've checked beforehand that you have that option. Once you're done with either capturing or killing it (if you have beaten the game, Sheimi/Shaymin won't give you any problems), you can fly away at your earliest convenience. If you can't, know that that sometimes can happen in some Japanese games, so turn off your game and try it again.