Pokémon: Indigo League

Tentacool & Tentacruel (1x19)

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Stuck in Porta Vista because they missed the boat, Ash and friends sit around waiting for the next boat and witness a great explosion. They later discover that it is a group of Tentacool that is attacking the city since construction is destroying their reef. Misty manages to appease the giant Tentacruel. She catches a Horsea that was being harassed by the Tentacool.[c]