well u can get it but it is a little difficult.ok it is on a seadra, ANY seadra so the ONLY way on dimond is u have to catch all the seadras u can find until u get the dragon scale. so good luck!! (im also trying to get the dragon scale!)
The best way, and not wasting pokeballs!
1. Find a banette, if u don't already have one, (you find them on route 225 at night, you need to beat elite 4 to go there.)
2. Go to route 226 and put banette first in the party and use ur super rod/good rod in the watery area and some horsea/seadra will appear, if the screen says "Banette frisked and found a dragon scale" that means the seadra holds a dragon scale; however if it doesn't just run and try again, after all it's only 5% that it holds a dragon scale.
Hope this helps
-legendofarceus
You can also faint a nincada from a gba game and put it in the first slot. THEN use the banettes frisk.
Nincada have the compoundeyes ability wich raises the percent of finding an item on a pokemon.
-Dantheman028
In the Whirl islands you can find a Horsea or a Seadra and sometimes they are holding a dragon scale.
You can get it by going to the pokeatolon point shop.
go to blackthorn and go to clairs poppa.
go to lake rage and catch red gyrodos
Give it a Dragon Scale and trade.
You need to attach a dragon scale and trade it
make it hold the item "dragon scale" and then trade it
The guy in the dragon shrine will give you one eventually.
In Blackthorne city there is a lady that will give you draco meteor as long as you have a dragon type pokemon
It doesn't evolve at a certain level, it evolves into Kingdra when traded holding a Dragon Scale.
After the Dragon's Den (when not battling Lance), you can find your rival at the Pokemon League on Mondays and Wednesdays.
There is no TM Dragon Drance