Tribes — Season 1
Starting tribe assignments as of Day 1 · September 21, 2000
Season 1 of Extinction Island began with 18 castaways divided into three tribes of six, each named after islands in the Fijian archipelago. Tribe assignments were made before filming began; no castaway had any prior knowledge of their tribemates.
Season 1
| Starting Tribes | |
|---|---|
| Vanua | Original tribe · 6 members |
| Kadavu | Original tribe · 6 members |
| Yasawa | Original tribe · 6 members |
| Merged Tribes | |
| Mamanuca | Merged Ep. 10 · Vanua + Kadavu |
| Nadi | Merged Ep. 13 · Mamanuca + Yasawa · Individual play |