I love molluscs. I love finding them. I love watching them. I love learning about them. And I love eating them. They could be the food of the future, efficiently converting unusable resources into nutritious meat for everyone. Marine mollusc farming is an awesome innovation which protects wild stocks from damaging over-harvesting. Sometime the methods used to harvest wild molluscs are damaging too- none more so than scallop dredging.
This shocking video from the UK graphically illustrates, aside from the gritty and low-quality nature of the catch, why we should all avoid buying scallops. (sure, its theoretically possible to get superior diver-caught scallops which do no damage to the seabed but I have never seen them for sale in Australia and only rarely in the UK).
So, don't reward this sort of environmental abuse with your money. Only buy sustainably harvested molluscs: for more information see the excellent Sustainable Seafood Guide from AMCS.