You can get it by, trading a sheldon for a horsea in Paicifidlog Town.
its not an emerald its RAYQUAZA the main legendary Pokemon in Pokemon emerald.
Fish with good rod on route 226
a horsey is a small water type Pokemon that was in the origonal 150. in the first season, the character misty was known for carrying a horsey (along with a togepee) it's eveolution is defintiyl not as innocent as the first looks: it is called a Kingston (i think) and is extremly powerful.
You cannot get a Yanma in Pokemon Emerald, as only Hoenn Region Pokemon can be found in Pokemon Emerald.
Go to route 226 and fish with good rod
There is no PalPark in Pokemon Emerald.
Sinnoh Pokemon DO NOT EXIST IN EMERALD!!!
There is no Autosave in Pokemon Emerald.
where can i find groudan in Pokemon emerald
defog is not in emerald,
rotom isn't in Pokemon emerald
emerald no doubt