<Tr> <Td> 2007 </Td> <Td> </Td> <Td> Les Stroud </Td> <Td> </Td> </Tr> <Tr> <Td> 2008 </Td> <Td> July 27--August 2 </Td> <Td> Jamie Hyneman, Adam Savage, Mike Rowe </Td> <Td> Both a new MythBusters shark special and a shark - themed episode of Dirty Jobs premiered for the event . </Td> </Tr> <Tr> <Td> 2009 </Td> <Td> August 2--August 8 </Td> <Td> Les Stroud </Td> <Td> The season premiered with Blood in the Water, a recreation of the Jersey Shore shark attacks of 1916 . </Td> </Tr> <Tr> <Td> </Td> <Td> August 1--August 7 </Td> <Td> Craig Ferguson </Td> <Td> The programming block featured six brand - new shark specials . It was advertised by the second appearance of the giant inflatable shark attached to the Discovery Channel building nicknamed "Chompie". Shark Week 2010 was rated the most viewed Shark Week ever with 30.8 million unique viewers . Shark Week is now the longest - running program event on cable . </Td> </Tr>

When did shark week start on discovery channel