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Named for, and easily recognised by, their exceptionally long, thresher-like tail or caudal fins (which can be as long as the total body length), thresher sharks are active predators; the tail is actually used as a weapon to stun prey.
Although occasionally sighted in shallow, inshore waters, thresher sharks are primarily pelagic - they prefer the open ocean. They are known to be seen on a daily basis visiting the cleaning stations at Monad Shoal near Malapascu Island in the Philippines.