Should this really count as an island?

[septimus]

@SlackerInc

I’m interested! Even though I am more sympathetic to their claim than the one in my OP.

I’ll link to my 2016 post in “Any Disputed US State Borders?”:

@septimus

Although no land boundaries were in dispute, there was a disagreement between states like Rhode Island and the Federal Government over who controlled the waters of Long Island and Block Island Sounds. In 1985 the Supreme Court ruled in United States v. Maine that Long Island was not a natural island and that Long Island Sound was therefore a juridical bay under Article 7(6). Thus the waters west of the line from Montauk Point to Watch Hill Point are internal state waters.