first u have beat pastoria's gym leader then wake into the great marsh will find a person on the right he will give you hm 5 (defog)
HM05: Defog
The HM dive cannot be acquired in Pokemon diamond.
talk to the person in the entry of great marsh. she will give you hm05 defog
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)
HM 05 is flash
first of all there like ten Hm
The HM strength
Bibarel + SkuntankorBibarel + Drifblimthere is no hm slave
There is no HM called dive in Pokemon Diamond you fat oaf.
Celestic Town
its suppose to be surf
as far as i know there is 8 hm's please be more specific