<Tr> <Th> Type </Th> <Td> Urban, natural sandy beach </Td> </Tr> <Tr> <Th> Demarcated </Th> <Td> 1884 </Td> </Tr> <Tr> <Th> Total length </Th> <Td> 13 km (8.1 mi) </Td> </Tr> <Tr> <Th> Length of promenade </Th> <Td> 6 km (3.7 mi) </Td> </Tr>

Which of the above beaches is the longest beach in india