S1·E9 Deserted Island

Grylls is kicked out by helicopter into the water near a deserted island in the Pacific Ocean. He demonstrates long distance swimming, shelter building and coconut harvesting. Grylls builds a bamboo raft to look for ships, and is surrounded by tiger sharks. He fishes off his raft using a fish bone hook, and shows how to signal a ship using the reflection produced by his polished knife.