Never underestimate the power of a single voice speaking out on behalf of animals who can't speak for themselves.

Analysts from the investment banking firm Credit Suisse say they measured a huge spike in negative public sentiment against beleaguered marine park SeaWorld this summer, due in large part to four words spoken by One Direction lead-singer Harry Styles.

During a concert in San Diego in early July, Styles paused and asked the crowd, "Does anybody like dolphins?" Upon hearing cheers to the affirmative, he then told them: "Don't go to SeaWorld."