You just survived a plane crash or a boat wreck and now find yourself stranded on an island in the middle of nowhere. And your stomach is growling.

Spear fishing has long been considered an ideal way to put food on the table for thousands of years, why not try it for yourself?

It's important to note that the instructors in the video already have a shelter built (first priority) and probably have access to water via coconuts (second priority), which leaves the third priority, food.

Keeping your energy stores up in a survival situation is very important because of all of the mental and physical activity you will have to do to keep a shelter over your head and signal for a rescue.

Once your energy drops below a certain point, it's very difficult to get it back up again, which means that as soon as you have all of your other bases covered, you should be tackling food before your stomach even starts growling.