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.
According to the Guinness Book of Records, the two largest great white sharks ever found were 36' and 37' feet long. The 36' foot shark was captured off Port Fairy in South Australia in the 1870s, while the 37' shark was caught in New Brunswick, Canada, in the 1930s.