you can get a horsea underwater. but only in sapphire.
you have to go to pacifidlog town and surf then you'll run into a horsea and that's how you get a horsea.
HOW GET A HORSEA ON POKEMONINDIGO.COM
You can't get horsea in xd.
Horsea is a Kanto region pokemon.
Horsea evolves at level 32. :)level 32
you get horsea on route 226
Horsea transforms into Seadra at Level 32.
You can get a Horsea in Pokemon Silver by finding it at the Whirl Islands.
Horsea evolves at level 32
Horsea can be found in either Whirl Islands or Seafoam Islands.
Horsea evolves at level 32 into a Seadra.
You can obtain Horsea by fishing on Routes 132, 133, and 134 in Pokemon Ruby.