Carotid artery disease is caused by a buildup of plaques in arteries that deliver blood to your brain. Plaques are clumps of cholesterol, calcium, fibrous tissue and other cellular debris that gather at microscopic injury sites within the artery. This process is called atherosclerosis.
Great white sharks may not be the world's biggest sharks, since that title goes to the whale shark, but they are the planet's largest known predatory fish. Whale sharks and great whites couldn't be more different in temperament.
3. Great White Shark. The great white shark, Carcharodon carcharias, has got to be one of the worlds most well known vicious sharks. These sharks have been known to grow as long as 26.2 feet and weigh as much as 5000 lbs! The Great White shark is the last surviving member of its species genus, Carcharodon.