Top-level predators, such as killer whales and larger sharks, prey on common threshers.

Are thresher sharks rare?

The Pelagic Thresher Shark (Alopias pelagicus) is a large, wide-ranging Indo-Pacific Ocean pelagic shark, apparently highly migratory, with low fecundity (two pups/litter) and a low (2-4%) annual rate of population increase.

Has a thresher shark ever killed a human?

There has only be one documented Thresher Shark attack on a person and it was provoked by the individual grabbing the Thresher Shark's tail. There have been four accounts of Thresher Sharks attacking boats, but were individuals fighting against capture.