It's a real thing.
Over here on the other end, we have much of the same stuff. Substitute Maine Lobster for King Crab, clams, salmon, haddock, scallops. We also have moose, venison, black bear blueberries.
In addition to the regular New England traditional dishes, we also have the mix of Acadian (French Canadian) styles. Some very close (of course) to Cajun.