Can a porpoise kill a shark?

While porpoises are generally not known for attacking sharks, they are intelligent and social animals that can exhibit aggressive behavior when threatened. In rare cases, a pod of porpoises may work together to fend off or even injure a shark, particularly if the shark poses a threat to them or their young. However, it's important to note that such incidents are uncommon, and sharks are typically much larger and more powerful than porpoises.