While many researchers believe warming ocean temperatures are a driver, they say several factors could be in play for the young sharks to migrate north.
Researchers say the number of juvenile white sharks in the Monterey Bay appear to be growing.Young, juvenile great white sharks hugging the shoreline is a common scene in Southern California. For more than a century, the area has been known as the home of so-called juvenile nurseries. They're stretches of beach where the young sharks can feed on fish before they're grown-up enough to hunt large mammals like sea lions. But with a spike in ocean temperatures, their range began to change.
Dr. Ebert and fellow shark researchers first began noticing the juveniles in an area of Monterey Bay, roughly a decade ago. And he says their numbers have not only held steady, they appear to be growing.Sharks in San Clemente, Calif. showing 'aggressive behavior' force beach closures on Memorial Day We first reported the northward migration as researchers were connecting it to an event known as a heat blob. A massive concentration of warm water that peaked off the West Coast in 2014. And while many researchers believe warming ocean temperatures are a driver, they say several factors could be in play.
"Our waters were cold. So we suspect a bunch of sharks left Southern California and maybe some went up there," says Professor Lowe.
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