Farmed Salmon Killing Wild Salmon

Young salmon infested with sea lice. Adult salmon can generally live with the lice, but wild juveniles migrating out to sea are particularly vulnerable because they are small and thin-skinned.
Alexandra Morton - Salmon Coast Field Station

Remember this the next time you are tempted by that pasty pink stuff in the grocery case:

WaPo: Salmon Farming May Doom Wild Populations, Study Says