Question

where is it?

Answer 1

You get it in Seafloor Cavern (Emerald) or Cave of Origin( Ruby Sapphire)

Here's a video: http://www.youtube.com/watch?v=G9JwLA97LWM

Comments

Triceratops Rex, thanks for trying to help but it doesn't matter if an answer is available elsewhere, unless it's already on this site. I edited those bits out of your answer.