(CNN) – In an adventure worthy of the TV show "Survivor," Sen. Jeff Flake and two of his sons marooned themselves on a deserted island in the Pacific last week during the Senate's week off.

Dodging sharks and suffering sunburns, the senator and his two teenage boys spent four days fending for themselves – spearing fish, catching crabs, picking up coconuts and sleeping outdoors in hammocks. They cooked what they caught, over a campfire kindled with a magnifying glass.