South Park (1997)

S13E11 Whale Whores

Stan is celebrating his birthday at the Denver Aquarium, looking forward to a memorable experience swimming with dolphins. However, chaos erupts when a surprise attack by the Japanese occurs, leading to the tragic death of the dolphins and shattering Stan's special day. The violence seems relentless, prompting Stan to take a stand and fight to protect the dolphins from further harm at the hands of the attackers.