<Table> Galápagos Islands <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Geography </Th> </Tr> <Tr> <Th> Location </Th> <Td> Pacific Ocean </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 0 ° 40 ′ S 90 ° 33 ′ W ﻿ / ﻿ 0.667 ° S 90.550 ° W ﻿ / - 0.667; - 90.550 Coordinates: 0 ° 40 ′ S 90 ° 33 ′ W ﻿ / ﻿ 0.667 ° S 90.550 ° W ﻿ / - 0.667; - 90.550 </Td> </Tr> <Tr> <Th> Total islands </Th> <Td> 21 </Td> </Tr> <Tr> <Th> Major islands </Th> <Td> 18 </Td> </Tr> <Tr> <Th> Area </Th> <Td> 7,880 km (3,040 sq mi) </Td> </Tr> <Tr> <Th> Highest elevation </Th> <Td> 1,707 m (5,600 ft) </Td> </Tr> <Tr> <Th> Highest point </Th> <Td> Volcán Wolf </Td> </Tr> <Tr> <Th_colspan="2"> Administration </Th> </Tr> <Tr> <Td_colspan="2"> Ecuador </Td> </Tr> <Tr> <Th> Province </Th> <Td> Galápagos </Td> </Tr> <Tr> <Th> Capital city </Th> <Td> Puerto Baquerizo Moreno </Td> </Tr> <Tr> <Th_colspan="2"> Demographics </Th> </Tr> <Tr> <Th> Population </Th> <Td> 26,640 (2012) </Td> </Tr> <Tr> <Th> Pop . density </Th> <Td> 3 / km (8 / sq mi) </Td> </Tr> <Tr> <Th_colspan="2"> Additional information </Th> </Tr> <Tr> <Th> Time zone </Th> <Td> <Ul> <Li> GALT (UTC - 6) </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> UNESCO World Heritage Site </Th> </Tr> <Tr> <Th> Official name </Th> <Td> Galápagos Islands </Td> </Tr> <Tr> <Th> Type </Th> <Td> Natural </Td> </Tr> <Tr> <Th> Criteria </Th> <Td> vii, viii, ix, x </Td> </Tr> <Tr> <Th> Designated </Th> <Td> 1978 (2nd session) </Td> </Tr> <Tr> <Th> Reference no . </Th> <Td> </Td> </Tr> <Tr> <Th> Region </Th> <Td> Latin America and the Caribbean </Td> </Tr> <Tr> <Th> Extension </Th> <Td> 2001 and 2003 </Td> </Tr> <Tr> <Th> Endangered </Th> <Td> 2007--2010 </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Geography </Th> </Tr>

How many islands are part of the galapagos