A fisherman was in critical condition after being rescued from Megansett Harbor in North Falmouth Sunday morning after he was found unresponsive in the water, Falmouth police said in a prepared statement. The man’s fishing companion alerted area residents, who pulled him from the water. He was resuscitated and taken to Falmouth Hospital. The man was identified as a 69-year-old Somerville resident, though police did not release his name. A spokeswoman for Cape Cod Health Care, which owns Falmouth Hospital, said Sunday evening the man was in critical condition. An investigation is being conducted by Massachusetts Environmental Police.Alli Knothe can be reached at firstname.lastname@example.org.