This is the first episode in which Misty captures a Pokémon in a battle onscreen.
This episode marks the last time a Pokémon has been caught by a main character in a Poké Ball variant until Jessie catches Mimikyu in It's Mokuroh! Catching Pokémon in Alola!! (2016), 730 episodes later.
Ash's Totodile is revealed to know Headbutt.
Misty uses her Lure Ball to catch a Corsola.
This episode shows one of the rare times, and the second one in total, where Brock stops Misty by pulling her ear. This time, he was stopping her from catching the Corsola that was trying to help Mika.