Sydney's iconic Opera House plays host to musicians and dancers, actors and singers. But beneath the notes of their voices, another song echoes across the city’s waters.

Indigenous Eora fisherwomen passed down their knowledge through their songs while paddling their canoes, a cooking fire at one end and their kids on their shoulders.

Anna Clark and Tamson go looking for the fisherwomen’s world, and discover that, if you listen closely, the past of Sydney Harbour still sings.