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.

Leif Manson

Leif Manson

Age: 27

Current Residence: San Diego, Calif.

Occupation: Phlebotomist

Meet the Castaways