The Backyardigans (2004)

S01E03 Pirate Treasure

Title: Quest for the Lost Treasure Plot: Pablo, Tyrone, Uniqua, and Austin embark on an adventurous voyage across the ocean to uncover hidden riches. But first, they face a daunting challenge—one of them must take a plunge into the sea! Splitting into two teams, they navigate in opposite directions, determined to find the elusive "X" that indicates the treasure's location.