|Red Basculin||Water||Surf/Super Rod||100% (Surf), 30% (Fishing)|
|Blue Basculin||Water||Surf/Super Rod||100% (Surf), 30% (Fishing)|
|Poliwhirl||Water||Super Rod||65% (Rippling)|
|Poliwrath||Water/Fighting||Super Rod||5% (Rippling)|
Wellspring Cave 1F
Move west until you hit water. When you do, move south and move up the stairs taking you east. Head east until you reach the Hiker. Yep, it's a battle!
Trainer Battle: Hiker
Grab the Max Repel to your east, then head back west, over to the water there. Move onto it with Surf, then head west over to the bit of land with the Battle Girl on it. Another battle!
Trainer Battle: Battle Girl
Collect the Escape Rope here. Will be handy for escaping the (albeit short) dungeon later. Now move south and continue following the path as it turns east. Continue to the stairs at the very end. Enter them.
Wellspring Cave B1F
This floor's dark! Use Flash to light things up and you'll be fine though. Head north-east and down the stairs. From there head north along the path cutting between the two pools of water. Continue east until you're stopped by the Black Belt. It's go time!
Once he's defeated, move onto the water to his south. Surf across to the eastern side and move off onto the land. Move around until you reach the item just before the ledge. Pick it up to find that it's a Max Revive . Move back to the water and Surf back across.
Now move up the path north of the Black Belt. You'll reach a Battle Girl wanting to battle.
Trainer Battle: Battle Girl
Now head north up the stairs and take the western path. Move up the stairs then move south to the end. Grab TM47 - Low Sweep from there, then head back and head down the steps. Head east past the set of steps leading south over to a slightly larger set leading south down to an item.
Go down and grab the Protector at the bottom. Move back up then take the path south to the west of the stairs. At the end you'll be able to find a hidden Carbos by using your Dowsing MCHN. Backtrack to the stairs then head north to the next set. Go down them and take on the Black Belt here.
Trainer Battle: Black Belt
Move north, onto the water. Surf across to the northern side. Move onto the land there. If you're up for a tough battle, talk to the Veteran here. He'll be keen to have you battle him.
Trainer Battle: Veteran
Once he's defeated, head east and turn that Dowsing MCHN of yours on. Use it to find the nearby Max Revive . Now return west and head up the stairs. Grab TM52 - Focus Blast at the top. Now go back down the stairs and head onto the water.
There's a little bit of land just south-west of where the stairs at that you can Surf to. Do so and use your Dowsing MCHN once more to find the Ultra Ball . That's it! Use an Escape Rope to exit, or backtrack to the entrance.
You can use the water running up and down the eastern side of this area to quickly get back to 1F then head back to the entrance from there. Once you're out, you'll be back in Route 3 .