you get a national dex so you can see even more
You go and catch them and raise every form to level 100
no but if you beat the elite four and you have seen every single Pokemon in the Sinnoh pokedex, you can go to Pal Park and migrate your Pokemon from your Ruby version there.
no
The Great Marsh. Skorupi is one of the pokemon that can bee seen with the binoculars and isn't available every day. See Related Link for details.
non that i have seen and i get 99734645 code total on PC just for platinum
you can get every Pokemon that you have seen and is in your pokedex
once you have seen all the Pokemon in the Sinnoh region go to Professor Rowan and he will give it to you
you need to see 210, you need to see 150 for Pokemon diamond and pearl
Totodile can't be seen on Pokemon Platinum unless you trade it over from a game where you can get totodile. You can do that in the Pal Park but this can only be done on the D.S and D.S lite.
In D/P you need to have seen 150 Pokemon to get the National Pokedex and for Platinum you need to see 210 pokemon.
you will have seen every Pokemon GOOD JOb!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
You have to have seen or caught every Pokemon in the game