Back in the 1970s, environmentalists staged photographs of dolphins allegedly being caught in fishing nets as part of a campaign to ban tuna fishing. The images were false but were a significant contributing factor to the demise of the US tuna fishery.
Yesterday's dolphins are today's polar bears.
Personally, I still think Larson did it best: sadly, too few people ever get the inherent contradiction of the interplay between polar bears (Arctic, north) and penguins (Antarctic, south). Happy feet indeed.