The oyster has been called the canary in the estuary for the death of an oyster can reveal environmental changes that may have gone unnoticed.
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.