Captivity causes harm to dolphins based on several factors: dolphins in the wild can swim 40 miles per day but captive dolphins only spend 20% of their time underwater; over 50% of captive dolphins will die within 7 years which is much shorter than their lifespan in the wild; and the process of capturing dolphins from the wild is a brutal massacre that disrupts their natural habitat and behaviors like hunting for live fish. The document calls on people to avoid dolphin attractions, voice their opinions against captivity, and learn how to help stop this cruelty to dolphins.