Accelerating ocean warming is altering shark migration routes along U. S.
coasts, driving predatory marine life farther north and increasing shoreline sightings at popular beaches during summer months.
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Data from the National Oceanic and Atmospheric Administration indicates that global oceans absorb over 90% of excess environmental heat.
This pushes cold-blooded species like great white, tiger, and bull sharks out of traditionally warm habitats.
Municipalities have responded by altering beach operations.
At New York's Rockaway Beach, officials logged 23 sightings from late May through early July, prompting temporary swimming closures and aerial drone patrols.
As ocean temperatures rise, researchers observe juvenile white sharks shifting into Monterey Bay. Atlantic tiger shark ranges have expanded over 249 miles north since the 1980s.
Despite heightened visibility, marine biologists note that human contact remains extremely rare. Fatal attack probabilities are estimated at 1 in 3.7 million.
Experts Explain Shark Behavior
Dr. Chris Lowe, professor of marine biology and director of the Shark Lab at California State University in Long Beach, explained temperature thresholds for specific species.
"That tends to be a major break for them, and pushes them either deeper or further north," Lowe said.
Biological adaptability allows apex predators to follow moving food sources into new territorial zones.
"There's going to be range extensions that we're seeing where sharks aren't normally seen because the waters are warming in different areas," said Joe Yaiullo, curator and co-founder of the Long Island Aquarium.
