- Size: 4 to 6 m
- Weight: 230 to 450 kg
- Average life span in the wild: 20 to 30 years
The Perfect Predator
Hammerhead sharks are consummate predators that use their oddly shaped heads to improve their ability to find prey. Their wide-set eyes give them a better visual range than most other sharks. And by spreading their highly specialized sensory organs over their wide, mallet-shaped head, they can more thoroughly scan the ocean for food.
Little Ones And The Big Ones
Most hammerhead species are fairly small and are considered harmless to humans. However, the great hammerhead’s enormous size and fierceness make it potentially dangerous, though few attacks have been recorded. The great hammerhead is the largest of the nine identified species of this shark. It can grow up to 20 feet (6 meters) in length and weigh up to 1,000 pounds (450 kg), although smaller sizes are more common.
Shark With A Radar
One group of sensory organs is the ampullae of Lorenzini, which allows sharks to detect, among other things, the electrical fields created by prey animals. The hammerhead’s increased ampullae sensitivity allows it to find its favorite meal, stingrays, which usually bury themselves under the sand.