Silverfox,
We just pick them fresh from the beach in front of the house in Southold...
Long Island Mussels are great and bigger than PEI Mussles...
but we do need to clean off the "beards" ourselves...
I can pick a half Bu. in a half hour... they are everywhere!
we have literally thousands in our 130' of waterfront alone...
(and then all the clams (hard & soft shell) & oysters we want in the water, and then there are the Blue Claws also!)...
Wine, Garlic & Butter... with baguette for dipping! doesn't get any better!

we used to have lots of Peconic Bay Scallops too, until the brown tide about 20 years ago...
now they are primarily concentrated in Hallocks Bay in Orient...