Reproduction
P. deltoides is an edible bivalve mollusc primarily found from the Eyre Peninsula to Kingston SE in South Australia and from Tasmania to Fraser Island in Queensland, with Younghusband Peninsula (Coorong Beach) in South Australia the site of the largest stock abundance in Australia, where they make up 85% of the total biomass. The Sir Richard Peninsula (Goolwa Beach) and Younghusband Peninsula sand dunes are composed mainly of P. deltoides shell sediments that have formed over the last 6,600 years.

