Pokémon

Season 1, Episode 68

Episode Title: The Evolution Solution

Air Date: 1998-10-15

Overview:

Ash goes to Seafoam Island to help Professor Oak to discover the mystery of how Slowpoke evolves into Slowbro. There, Professor Westwood V is also trying to solve the mystery. Jessie captures Shellder, and tries to rush a Slowpoke's evolution, forcing Psyduck to stall the evolution.