Coffin Bay's oyster tours turn the town's best-known product into a proper travel experience. The standard trip puts you in waders and takes you into the shallows to learn how the oysters are grown, shuck them, and eat them fresh from the water.
It is touristy in the best sense: direct, local, and tied to the place rather than a generic food stop. Book ahead when the Eyre Peninsula is busy, and expect timing to depend on tide and weather.