Sardines are tiny migrating fish that live in huge shoals. They are available canned only here. I probably could buy them fresh or frozen online, but why bother?
Sardines in oil are too ... oily to my liking. I only ever buy them in tomato or mustard sauce to have something in stock for those desperate times that I really can't think of anything better to prepare. ;-)
All pictures on this page were borrowed from the internet.
Pic1: sardines in tomato sauce
Pic3: right out of the can — been there, done that
Pic6: with fresh tomatoes