Go to Mosdeep city and walk to the left side of the gym. The house at the very far left of the gym is Stevens house. talk to him and he will give the HM Dive
In Third Generation Whirlpool is no longer an HM.
up your rump
In the Cave of Origin.
You get the hm strength and give it to one of your pokemon
it isn't in Pokemon platinum its in ruby and Sapphire
in the cave of orgin
Get the HM Rock Smash
in the cave of origin
Use the hm surf
no actually it don't learn dive but it should
Actually, you can't get HM Rock Climb on Pokemon Ruby, its only available in Pokemon Diamond, Pearl and Platinum.
You have to use a HM called strengh.