You can find it in the Ice path but you can't use it until you get the rising badge
In the Ice Path.
Route 18
you will get it from the girl at the 8th badge gym she will give you the hm 07 waterfall
AnswerOnce you have taught your Pokemon the HM Waterfall, you must have it in your party in order to use it. Upon reaching a waterfall, Surf to the very edge of where it cascades down. You may find that this takes a while as once you Surf onto the actual waterfall, it forces you back. Once you are facing the waterfall and there is no space between you and it, press A. If the Pokemon who knows Waterfall is in your party, a small message should appear asking you if you wish to use the move Waterfall. Select 'yes' and you will begin to ascend the water. If you have not obtained the Rising Badge from Claire in Blackthorn City, you will be unable to use this move.
you will find it on the ground but there is an ice puzzle to get it.
There is no move relearner in Crystal
Most water type Pokemon can learn the move Waterfall.
squirtlewarturtleblastoisepsyduckgolduckpoliwagpoliwhirlpoliwrathtentacooltentacruelseeldewgonghorseaseadragoldeen seakingstaryustarmiegyradoselaprasvaporeonomanyteomasterkabutokabutopsmewchinchoulanturnmarillazumarillpolitoedquagsireslowkingqwillfishremoraidoctillareekingdrasuicune My Lapras and Gyrados Know the move waterfall
Hm08 is rock climb not waterfall. Hm07 is the move waterfall
Mean look is a move in the Pokemon series of games. It is not possible to get the move as a TM in Pokemon Crystal.
HM, Waterfall is in the Ice Cave on Four Island.
not all Pokemon can learn it, only some can learn that move. i can't seem to find a list of what Pokemon are able to, but ill post it if i find one.