You can get the HM Strength after you beat the 7th Gym Leader, Byron. He will give you the HM immediately after defeating him.
The HM dive cannot be acquired in Pokemon diamond.
whirlpool is not classified as a HM in that Pokemon series, only in heartgold/soulsilver is it a HM, in diamond it is only a simple TM (1use)
first of all there like ten Hm
The HM strength
Bibarel + SkuntankorBibarel + Drifblimthere is no hm slave
HM05: Defog
its suppose to be surf
Celestic Town
There is no HM called dive in Pokemon Diamond you fat oaf.
as far as i know there is 8 hm's please be more specific
HM 8 can be obtained in Sunnyshore City.
That HM is called Waterfall.