Alopias vulpinus, commonly known as the common thresher shark, is a large species of shark found in temperate and tropical oceans worldwide. It is easily recognized by its long, slender body and distinctive long tail, which can be nearly as long as its body. This tail is used to stun prey, primarily small fish and squid, making it an effective hunter. The common thresher shark can grow up to 20 feet (6 meters) in length and is known for its acrobatic behavior, often leaping out of the water. It is a pelagic species, meaning it inhabits the open ocean rather than coastal areas. Conservation efforts are in place to protect this species due to threats from fishing and habitat loss.