Police Harbor Units and the FDNY searched for the man who went overboard Thursday night.
It happened just north of the Statue of Liberty around 10:30 p.m. as the ferry was heading from Manhattan to Staten Island.
The boat stopped for a half hour while a search by police and emergency workers got underway.
Harbor units searching for person overboard off Staten Island Ferry
Helicopters were in the air aiding in the search.
The Coast Guard searched through the night before suspending efforts Friday morning.