There are five types of oysters in the U.S., and here's everything you need to know about them. Had McDonald’s opened shop in the 1850s, it probably would have served oysters rather than burgers.

Switching to oysters harvested only in the U.S. isn’t an option, because although there are numerous types of oysters available on U.S. coasts, the majority of U.S. seafood is imported.

Loch Fyne farms Pacific oysters, which can be found at various locations on the Scottish coast. These oysters are harvested all around the world, including France, Australia, and New Zealand.