Poliwhirl, the generation 1 Pokemon, is unique as it can evolve into two different Pokemon for its final evolution.
Here's how to evolve your Poliwhirl into Poliwrath or Politoed.
How To Get Politoed
If you trade a Poliwrath while holding a King's Rock it will turn into a Politoed.
We're not sure how it will work this time around, but we're excited to find out.
How To Get Poliwrath
In order to get Poliwrath, you will need to evolve your Poliwhirl with a Water stone.