AdvertisementThe drama unfolded Saturday at Scarborough Beach State Park in Maine, where Greg Wilfert has worked as a lifeguard for more than five decades. “I thought I was caught in a boat propeller, and I realized I wasn’t,” Wilfert told WMTW. Advertisement“It was frightening,” Wilfert told WGME. Scarborough Beach State Park was closed to swimmers for about an hour after Saturday’s scare while lifeguards and public safety crews watched the water. AdvertisementOfficials said significant numbers of great white sharks have recently been seen off Scarborough Beach State Park and Higgins Beach, including in shallow areas near sandbars.