Can't use the HM whirlpool to get rid of it.
In Pokémon Platinum, to destroy the whirlpool, you need the HM move Surf. First, obtain the Surf HM from the move tutor in the region. Then, use Surf to navigate across the water and reach the whirlpool. Once you're close enough, you can interact with it to clear the path.
Snorlax Can Learn Surf - Strength - Whirlpool - Rock Smash and Rock Climb
Once you have entered then you battle someone, easy... well you need surf an whirlpool bare that in mind and when you surf surf to the left and you should see a clear path of water separated from the rest of the water by rocks, and then you should see the whirlpool and obviously use whirlpool then keep going and going and you turn right and voala it is there!
This ones easy. when you get down there you surf to the left. then you use whirlpool on the whirlpool that blocks the way.(if this is crystal then their should be a house just past the whirlpool to the right) if this is g/s then after the whirlpool surf all the way to the right until you find a stretch of land. walk up to the top and pick up the item that's their.
First, travel to Olivine City. Then, surf Southwest of Olivine to get to a Whirlpool. Then, use a Pokemon with Whirlpool to go across the whirlpool to get into the Whirl Islands.
You need Surf, Whirlpool , strength
you find lugia in whirl island you need surf and flash to get around but you need the HM whirlpool to get past the whirlpool at the entrance of the cave
you have to surf route 41 and use whirlpool then you follow a rock area that will lead you to it!
you can find it at whirlpool island.. where u can find the 5th jotho leauge.. u need to have surf ,whirlpool, and waterfall.. umm i dont think u need waterfall HM but try atleast.. find water where u can surf..
The fifth badge is in Sootopolis City, you need Surf, Dive, and Whirlpool to get it
Simple. Seafoam islands. Obviously you need to know surf to get there, and also whirlpool.
U get there by the moves surf and whirlpool just off olivine city. !