The bigeye thresher is a species of shark known for its distinctive long tail and large eyes. It belongs to the family Alopiidae and can grow up to 4 meters (13 feet) in length. This shark is typically found in deep ocean waters and is known for its ability to dive to great depths. Bigeye threshers primarily feed on small fish and squid, using their long tails to stun prey. They are often seen in tropical and temperate regions of the world, including areas around Hawaii and California. Due to overfishing, their populations are declining, leading to conservation efforts to protect them.