25 Crazy Facts About Sharks You Can Sink Your Teeth Into

Posted by on August 21, 2012

Cue the Jaws music. Like the Olympics, Shark Week 2012 has come and gone. Although  sharks may have a hard time distinguishing between friends and food, they’re still the kings of the ocean. In honor of Shark Week 2012, here are 25 crazy facts about sharks you can sink your teeth into.


25

Expensive Dental Bills

The average shark has 40-45 teeth and can have up to seven rows of replacement teeth. Because sharks lose a lot of teeth and grow them back quickly, they often go through more than 30,000 teeth in a lifetime.

24

Bad to the Bone

Sharks do not have a single bone in their bodies. Their skeletons are made of cartilage.

23

Jam Packed

Hammerhead sharks are born with soft heads so they won’t jam their mothers’ birth canals.

22

Not Your Mama’s Cookies

The Cookiecutter shark’s name stemmed from its unusual feeding method. The sharks attaches its mouth onto its victim and carves out a hunk of flesh, leaving a circular wound in its prey that resembles the hole a pastry cutter forms in dough

21

Survival of the Fittest

The first tiger shark pup to hatch inside its mother’s womb devours its unborn siblings until only two pups remain, one on each side of the womb.

20

Prehistoric

Sharks inhabited the earth 200 million years before the dinosaurs appeared and have changed only minimally during that time.

19

It’s a Man’s World

Despite the fact that an almost equal amount of men and women swim in the ocean, men account for nearly 90 percent of shark attack victims.

18

Stomachs of Steel

Shoes, chairs, boxes of nails, drums, entire bottles of wine, and the rear half of a horse are just some of the many bizarre objects that have been found in sharks’ stomachs over the years.



17

Knee Deep

About two-thirds of shark attacks on humans have occurred in less than six feet of water.

16

What are the Chances?

About 30 people die during shark attacks each year, which means you have a greater chance of being killed by bee stings or struck dead by lightning.

15

Putting Things in Perspective

For every human killed by a shark, two million sharks are killed by humans.

14

Cancer Cure

Scientists study shark cartilage to research possible cures for cancer because sharks rarely ever develop cancer.

13

Whoa

A Great White shark weighing 2,664 pounds and measuring almost 17 feet in length was the largest fish ever caught with a rod and reel.

12

Adaptation

Bull sharks can live in both salt and fresh water by regulating the substances in their blood.

11

Just Breathe

Most sharks must swim constantly to force water through their mouths and over their gills because they lack the ability to pump water over their gills like the majority of fish.