Thanks to scary movies and sensationalized television programming, sharks have a hair-raising reputation. But not all sharks are really as scary and dangerous as they’re portrayed.
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Sharks have been around for at least 400 million years. Even before dinosaurs roamed the earth, sharks hunted through the oceans!Tweet this Fact
Sharks never run out of teeth. If they lose one, another pushes forward (kind of like a conveyer belt) from the rows and rows of backup teeth they have. A shark may lose 20,000 teeth in its lifetime.Tweet this Fact
While all of a shark’s senses are highly developed, their sense of smell is superb. If a shark was put into a large swimming pool, they’d be able to detect a single drop of blood in the water.Tweet this Fact
Sharks don’t have a single bone in their bodies. That’s right … none! Instead they have a skeleton made up of cartilage. That’s the same type of tough, flexible tissue that makes up human ears and noses.Tweet this Fact
The head of a hammerhead shark literally looks like a hammer. They swing their head side to side like a metal detector to detect electrical impulses from prey. And, with eyes and nostrils at the end of each “hammer,” they have 360 degree vision. Impressive!Tweet this Fact
Sharks don’t curl up and rest for several hours at a time like humans. Most species of sharks need to swim constantly to keep water moving over their gills. But they do have active and restful periods that allow them to recharge. Some humans sleep walk. Do sharks sleep swim?Tweet this Fact