A New York City man visiting Shelter Island with his family has died after going for a morning swim, police said.
Spencer M. Korwin, 38, of Manhattan, was found dead Wednesday afternoon, Sept. 2 under a dock in Shelter Island Sound near Crescent Beach, the Shelter Island Police Department said.
Korwin was last seen alive around 8 a.m. Wednesday, when he left the same dock for his swim, police said. Korwin was staying at a hotel on the island with his family, authorities said…