Sealed effectively and frozen. Haven’t experimented with it still. Does have a robust fish scent on the outside with the bag. It seems to be yummy. I believe the kind of packaging they use was distinctive. There was some blackish liquid which has a negative stench when I was opening https://fresh-atlantic-salmon-pri14358.activablog.com/31157851/a-secret-weapon-for-mackerel-for-sale-near-me-frozen