Pub manager Jimmy Agnew says he doesn't know why anyone would have dumped the sea creature there.
Nantucket's public works department hauled the dead shark away after its discovery around 7 a.m. Thursday.
But Agnew said the pub fielded calls and questions all day long after word got out about the land shark.
He said a comedian whose band performs at the pub also posted a series of jokes about it on Facebook.
One suggested the shark went to Sea Dog "to meet his chums."
