Sesame Workshop, the parent company of Sesame Street, has filed a federal lawsuit against United Parks & Resorts, the company that operates the SeaWorld and Busch Gardens chain of parks. The complaint alleges unpaid royalties and contractual violations tied to Sesame-themed attractions across multiple parks. If successful, this could end a 45-year partnership between the two companies. Sesame Workshop is seeking to terminate its licensing agreement with United Parks and Resorts and recover unpaid royalties, along with punitive damages. The lawsuit also raises concerns about operational decisions involving Sesame themed attractions.