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Scientists can track sharks using an investigative technique called geographic profiling, which pinpoints locations where attacks might happen, although attacks are not common. In great whites, those locations are other animals’ travel routes and landmarks like reefs and channels
 
Hammerhead sharks are famous for their oddly shaped heads, called cephalofoils, really make them better hunters. The electrical sensors the sharks use to pinpoint their prey are spread out along the cephalofoil’s wide surface area, giving them better prey detection skills.
 
Sharks are especially susceptible to the moon’s control of ocean tides. The phase of the moon can affect sharks’ eating habits and draw them closer to shore … which in turn, could lead to increased interactions with humans.
 
The average shark lives to be 25 years old, but some can get as old as 100! They live so long because their chances of contracting a disease are low. Their skeleton is made up entirely of cartilage, which drastically lowers the likelihood of developing a tumor and strengthens their immunity
 
Modern sharks breathe by ram ventilation, a process that forces water into their mouths and then processes it as they swim forward. When they’re idle, sharks use muscles around the mouth to pull water in and over their gills. Sharks that don’t have muscles strong enough to do the job must take shorter and less frequent rest stop
 
One of the worst shark attacks in history was the sinking of the USS Indianapolis during World War II. Nearly 900 sailors were stranded in the Philippine Sea near Guam for four days. Experts can’t be sure how many sailors lost their lives to sharks, but when help arrived, only 316 people were still alive
 
A shark’s tooth-shaped skin, called denticles, allow it to move swiftly through the water without collecting barnacles and algae deposits on the skin. In 2005, engineers successfully mimicked the pattern of scales, creating a bacteria-resistant coating
 
It’s a shark-eat-shark world … sometimes even before the sharks are born. When some species’ embryos begin to develop teeth, they eat their unborn brothers and sisters until one shark remains, an act known as intrauterine cannibalism
 
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