It's a battle of the sexes as the tribes are separated into men versus women. The 18 castaways will be divided into Tribes of nine: the Salani Tribe and the Manono Tribe, named after islands in Samoa.

Christina Cha

Christina Cha

Age: 29 Age: 21

Current Residence: West Hollywood, Calif.

Occupation: Career Consultant

Meet the Castaways