Gift: Nacrene City
You won't find Omanyte in the wild in this game — you get it as a gift.
Looking for Omastar? It isn't found in the wild in this game — evolve Omanyte (Level 40).
For the look, the best colour match is Dive Ball or Quick Ball.
Evolution: Omanyte → Omastar (Level 40).
Omanyte in every game · Pokémon Black & White / Black 2 & White 2 interactive map (Unova)