I have to say i don't know that area. But this spring, on an island off maine we dog fresh clams and picked mussels and an hour later popped them on the grill...when they open we dunked them in melted butter. BEST ever.
I can't believe with all the boat fishermen and all the shore cape residents and the guys who fish this area in general that no one has ever jumped out of a boat at low tide around the shoal and shellfished. Used to go our with #^^^^& Clark from Rock Harbor often and every trip with did this. Most of the time because he had a party to go to and he needed hor deurves to bring.
Swimmer a.k.a. YO YO MA
Serial Mailbox Killer/Seal Fisherman