Like all Mainstream Pokemon Games, there are a number of Pokemon you can receive as gifts throughout your journey in this game as well. One of the second Gift Pokemon you will have the chance to obtain is none other than Omanyte. When in Mt. Moon, after defeating the Super Nerd near the final exit of the cave, you will have the option of receiving either the Helix Fossil or Dome Fossil as a gift. If you select the Helix Fossil, you will later obtain Omanyte from the Cinnabar Island Research Lab should you so choose to revive the fossilized Pokemon.