'Jaws' remake? New York ups 'shark surveillance' with four reported attacks in two days

Four swimmers have been bitten by confirmed or suspected sharks on different beaches off New York's Long Island since Monday, officials told NBC 4 New York.

Two teenagers and two men in their 40s suffered bites of varying severity at Quogue Village Beach, Fire Island Pines, Robert Moses and Kismet beaches at the end of the long Independence Day weekend.

The 47-year-old man was taken by ambulance to a nearby hospital with a right-knee bite from a "large marine animal," and a Good Samaritan took a 15-year-old male surfer to the hospital with a shark bite to his left foot, whose "heel and toes were still intact."

The 49-year-old man was bit on his right hand, and a 15-year-old girl on her left leg. It's not confirmed what animals bit them. Officials flew a drone after the girl's bite but couldn't find any visible sharks.

The Office of Parks told the New York Daily News that Robert Moses opened 90 minutes late Tuesday morning "after officials spied a school of about 50 sharks swimming 200 yards from the beach," assumed to be sand tiger sharks that are common in New York waters but not in large schools.

The four reported possible and confirmed shark bites on Long Island are already half the confirmed total of last summer, which itself was an unusually high number, according to the Daily News. New York has more than a dozen drones for its "shark surveillance" program.