"Baby Shark's Big Show: Findependence Day / Costello Quits" features two superhero-themed underwater adventures centered on teamwork, emotional regulation, and appreciation. In the first story, Fishy Force faces Swimpress Werma, who steals all the treats in Carnivore Cove; the team learns that slowing down, taking deep breaths, and using calm problem-solving leads to a solution. In the second story, Vigo's assistant Costello quits after feeling unappreciated, highlighting gratitude, communication, friendship, and repairing relationships through apology. Search-relevant themes include social-emotional learning, conflict resolution, critical thinking, cooperation, and responsible decision-making. The episode supports school curricula focused on character education, relationship skills, and strategies for managing frustration and working effectively with others. Part of the "Baby Shark's Big Show" series.