Why is salmon about to get more expensive? Sea lice have ravaged salmon farms in two of the world's largest exporting countries -- Norway and Scotland -- over the past year. And if that didn't spell trouble enough for the salmon farming industry, Chilean salmon farms have also been slammed by a highly toxic algae bloom. 

Global supplies of Atlantic salmon fell by almost 9% last year and won't rebound anytime soon, as sea lice problems worsen.