Ocean historian Dr Killian Quigley joins Radio Marinara to look beneath the surface of Port Phillip Bay and ask what the seafloor can tell us about the place we call home.

His new handbook Bottom of the Bay brings Traditional Owner knowledge together with history, art and science, treating the bay floor as more than something to map or measure.

Killian talks about shipwrecks, diving, environmental change and why the humanities belong in conversations about the ocean too.