Elizabeth Rapuano, director of marketing and communications for Governors Island, said security guards on the north shore of the island discovered the feline Sunday night, the New York Daily News reported Thursday.
"The assumption is that she came over by water," Rapuano said. "She was wet. Her fur was salty."
Rapuano said workers believe the cat may have been thrown out into the harbor by the weekend storm in New Jersey that left at least 45 people dead.