Porbeagle sharks are increasingly targeting striped bass caught by fishermen across Massachusetts, according to reports from shark researcher John Chisholm of MA Sharks. While great white sharks are common seasonal visitors, porbeagles remain in the Bay State year-round and have recently been documented taking fish from anglers from the North Shore to Nantucket.
Why are porbeagle sharks targeting striped bass?
Porbeagle sharks are top predators that hunt actively in the Atlantic. John Chisholm, who runs MA Sharks, received four separate reports of these sharks taking striped bass on the day before July 4th. These sightings spanned a wide geographic range, from the North Shore down to Nantucket.
The behavior isn’t limited to stealthy hunts. Captain John Boats reported a “National Geographic moment” during a Provincetown whale watch where a porbeagle lunged after a striped bass. The captain described the predator’s aggression as comparable to someone lunging for a holiday hot dog.
Where are great white sharks appearing this season?
Great white sharks have also been sighted throughout the region over the holiday weekend, following their typical summer and fall migration to hunt seals. According to recent sightings:
- Cape Cod Bay: An 8-foot white shark was spotted approximately two miles west of Jeremy Point in Wellfleet.
- South Shore: A dead seal bearing shark bite marks was discovered on Rexhame Beach in Marshfield.
- North Shore: A small white shark was sighted about five miles off the coast of Marblehead.
The activity extends further north into Maine. The town of Georgetown reported two sharks near Reid State Park, which led to the temporary closure of swimming areas on a Sunday morning before they were reopened a few hours later.
How can beachgoers and anglers stay safe?
John Chisholm urges people to review specific safety guidelines before entering the water, as sharks often hunt for seals in shallow areas. He recommends that individuals stay close to shore to ensure rescuers can reach them and avoid isolating themselves.
According to Chisholm, users should avoid areas where seals are present or where schools of fish are visible. Other safety measures include avoiding murky or low-visibility water, limiting splashing, and following all lifeguard instructions and beach signage.
Comparing Shark Activity: Porbeagles vs. Great Whites
While both species are apex predators in Massachusetts waters, their presence and behavior differ based on recent data from MA Sharks and local sightings:
| Feature | Porbeagle Shark | Great White Shark |
|---|---|---|
| Presence | Year-round resident | Summer/Fall migrant |
| Recent Target | Striped Bass (Angler catches) | Seals (Near shore) |
| Sighting Range | North Shore to Nantucket | Marblehead to Maine |
Frequently Asked Questions
Are porbeagle sharks dangerous to humans?
The provided reports focus on their predation of striped bass and their role as top predators; however, safety experts like John Chisholm recommend general shark safety precautions for all swimmers.
Where can I report a shark sighting?
Sightings can be reported to researcher John Chisholm at MA Sharks or via the Atlantic White Shark Conservancy’s Sharktivity app.
Why do white sharks come to Cape Cod?
According to John Chisholm, white sharks migrate to the region every summer and fall specifically to hunt for seals close to the shore.
Have you had a shark encounter while fishing or swimming this season? Share your experience in the comments below or subscribe to our newsletter for the latest marine wildlife alerts.