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.
8. The iceberg that sank the Titanic had been floating around the north Atlantic for about 3,000 years and came from a glacier in Greenland. 9. Titanic's wreckage was discovered more than 70 years after the ship sank, at a depth of 12,000 feet below the surface of the ocean and split into two pieces. 10. The wreckage was discovered during a 1985 expedition, about 13.2 miles from the shipâs last known location.