After researchers from the Scripps Institution of Oceanography in San Diego discovered a seahorse-like creature called the ruby sea dragon, they described this brilliant red fish as a charismatic species. Many scientists use the word charismatic to characterize animals that humans may find particularly appealing, which makes such animals useful for raising public awareness of biological diversity and environmental concerns. Such fauna — or in the case of pandas and elephants, megafauna — are sometimes called glamour animals or hero species. A hero shot in advertising, by the way, is a photo of a product or service that sums up its appeal to potential customers. This is part of a complete episode.