Whaling emerged in ancient times, when whales served as a source of food, fuel, and other everyday resources that were vital for human civilizations. Prehistoric images of whales are found on rocks in a few areas throughout the world, most notably the famous petroglyphs at the Bangudae cliffs in Ulsan, South Korea, which depict whales and other animals. These petroglyphs suggest that ancient people hunted sea mammals for survival and regarded whales as an object of worship. Petroglyphs such as those at Bangudae are drawings made on stone. Typically unpainted (Arnold, 1996), they are regarded as one of the oldest art forms in the world. This article describes an activity in which students learn how to use art to educate others and stand up for a cause. Students will learn about the history of whale and dolphin welfare, and then create their own films, posters, and installations for a cause of their choice. Students will gain a deeper understanding of how they can share important messages with a broader audience and educate others through their own artwork and creativity.