Overview

• City officials posted that swimmers must stay out of the water until further notice and follow lifeguard instructions, though the beach remains open for beachgoers on the sand.
• Friday’s action follows a brief closure Thursday after a sighting near nearby Long Beach, when the harbormaster found no sharks off Good Harbor and the beach reopened around 3 p.m.
• A National Weather Service high surf advisory runs through 8 p.m. Saturday with forecasts of 10 to 15 foot breakers and dangerous rip currents.
• The Sharktivity app has recorded several recent North Shore reports over the past month, with more sightings logged off Cape Cod.
• Ipswich’s Crane Beach has deployed a shark-detection buoy this summer following last fall’s extended shark-related closures.