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.
As one of only 705 Titanic passengers who survived, Eva Hart never forgot what she had seen and heard that night. When she died on Wednesday at a hospice in London at the age of 91, she was regarded as last link of living memory with the maritime disaster that rocked the world on April 15, 1912.