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Studies show great white sharks are migrating north

Great white shark sightings have increased up to four times in northern Atlantic waters due to seal population recovery and fishing protections, scientists report.

  • Researchers report white sharks are moving into New Hampshire, Maine and beyond, with a commercial clam digger's drone capturing a nearly 12-foot shark earlier this month in Scarborough.
  • Protections and prey rebounds have driven the northward shift, with scientists linking seals thriving after the Marine Mammal Protection Act and white sharks benefiting from the U.S. federal fishing ban since 1997 and Massachusetts marine fisheries department's 2024 laws.
  • Researchers also found average residency increased from 48 days to 70 days, while detections off Halifax, Nova Scotia rose about 2.5 times and in the Cabot Strait nearly four times, indicating a northward shift.
  • Authorities posted advisories and the Oqunquit Fire Department shared a shark advisory last week while officials raised a yellow flag on Aug. 19; boaters, beachgoers and fishermen in New England are adapting to increased shark presence.
  • Conservation groups emphasize that white sharks remain vulnerable despite rising sightings in recent years, with protections continuing and researchers sharing guidance to reduce rare fatal encounters.
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13 Articles

Mason City Globe GazetteMason City Globe Gazette
+8 Reposted by 8 other sources
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Studies show great white sharks are migrating north

SCARBOROUGH, Maine — Rick Clough spent some four decades fishing for lobsters and sea urchins off the Maine coast before spotting one of the ocean’s most recognized predators — a great white shark.

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Glens Falls Post-Star broke the news in on Wednesday, August 27, 2025.
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