The slow-rising sun casts an orange glow over the tranquil waters of the Merimbula lake, encumbered only by oyster leases and hungry seabirds.

While it might seem like paradise, under the surface there are issues brewing.

Filmmaker Kim Beamish has set his sights on the Merimbula oyster industry for his next documentary.

Every six weeks internationally-renowned filmmaker Kim Beamish travels from Canberra to the far south coastal haven of Merimbula to document the lives of a young family of oyster farmers.

Oysters from Merimbula are a delicacy, often seen on the menu in fine restaurants across the south-eastern seaboard, but an invisible problem has growers concerned.