What Noise Annoys An Oyster?

The answer to this question, for the Common oyster, might well be, the sound of an approaching trawler, about to trash its home reef. It could also be a foodie, opining that the Japanese Rock oyster is preferable 'cos it's bigger (even if, it lacks the taste). Common oysters were once, indeed, common around the UK but have almost been wiped out by overfishing and trawling. The Wild Oysters Project is a programme, attempting to restore Common oyster reefs in UK locations (https://www.theguardian.com/environment/2023/aug/02/oyster-restoration-project-rebuild-uk-reefs-overfishing-seabed-trawling). The project will hang metal containers with Common oyster spat (immature molluscs) in areas with piles of discarded (already consumed) adult shells. It's believed that this combinations offers all the ingredients for reef building.