You ain't seen clams until you've seen a Geoduck!
I won't post any pictures or links for fear of being banned (google it on your own) but it's a legit clam residing in the Washington State area among other Pacific Northwest areas. Biggest darn beach clam I've ever seen. It would be hard to look at while eating whole, but cut up and cooked they're just fine. One clam will make a large pot of clam chowder.
Speaking of Washington state, that's where our Queen and a couple of clan members reside. Any of you Washington THUNDERBIRD members ever been on a Geoduck dig? It can be a heck of a workout.