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.
The World's Biggest Living Species of Fish. The whale shark is the world's biggest fish, and it even sets the record as the largest living nonmammalian vertebrate on land or in the air or water. How big is it? The confirmed largest whale shark was 41.5 feet long and weight about 47,000 pounds.