The new Australian documentary Oyster will premiere twice later this month, on different continents. It's not so much a doubling-up as a happy coincidence, and a coup for the filmmakers.

The first event, a world premiere, takes place on October 28 at the Canberra International Film Festival. The second, that same day, is on the east coast of the US, in Chesapeake, a region famous for its seafood, especially its clams, crabs and oysters.