1. Choose the right location
Shellfish gathering is to be done on the foreshore: the area that reveals at low tide. Every type of foreshore is an ideal playground for shellfish gatherers. Some areas have a restricted or forbidden access : channels, harbors or oyster farms, but also the areas affected by local or temporary pollution.
You should absolutely respect this interdiction: if eaten these animals can be dangerous for your health. Some preserved areas like Moëze Oleron, have their own regulations: species are protected from gathering or it is only allowed during specific periods.