The time it takes for a shark use and lose each tooth varies, depending on the species and age. Younger sharks replace their teeth more often. There is also some evidence that sharksâ teeth last significantly longer during colder water temperature in some sharks, a time when they traditionally eat less.
Last Titanic survivor, a baby put in a lifeboat, dies at 97. Millvina Dean taken ill with pneumonia in England, after Hollywood stars DiCaprio and Winslet came to her aid. Millvina Dean, the last living survivor of the Titanic disaster, with a painting of the vessel. Photograph: John Stillwell/AP.
Bound from Southampton to New York, the Royal Mail Steamer Titanic struck an iceberg in the North Atlantic at 11:40 p.m. on Sunday, April 14, 1912, on her unfortunate maiden voyage. Within three hours, she sank to a depth of about 13,000 feet and more than two-thirds of the 2,224 passengers and crew perished at sea.