go underwater and dive then look on a dark spot and click a. You haave now obtained a heart scale.
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i do not think you can but you can take Pokemon to the heartscale guy and see if that move is compatible with any of your Pokemon you give him a heartscale that you find under ground he collects them
In the waters of the safari zone
You cant. You need to trade it from Ruby, sapphire or emerald version.
Lucario isn't in Sapphire,Sapphire is a Hoenn pokemon,Lucario is a sinnoh pokemon.
no you cant. you catch spheal in Pokemon sapphire and snorunt in Pokemon ruby.