46highest level
Fought at Sea Route 20.
This is around Beat the Elite Four and the Champion in the story — that page lists everything you can have caught by this point.
Types on this team: Water ×2Poison
| Pokémon | Moves | |
|---|---|---|
 | Poliwhirl Lv 46 | Bubble Beam Mud Shot Belly Drum Wake Up Slap |
 | Tentacruel Lv 42 | Barrier Water Pulse Poison Jab Screech |