Katharine the great white shark is making her way back down Florida's east coast.
Florida Today reports that shark's satellite transmitter pinged near the Florida-Georgia border on Sunday and then near Daytona Beach on Wednesday.
Chris Fischer, founder of the shark-tracking group OCEARCH, says Katharine's movements over the past two years demonstrate a transition from an immature shark to a mature shark. Scientists believe she might be pregnant.
OCEARCH researchers captured Katharine off Cape Cod, Massachusetts, in August 2013 and attached a transmitter to her dorsal fin. She measured 14 feet, 2 inches long and weighed 2,300 pounds.
The next year, Katharine became OCEARCH's first Atlantic great white shark to migrate past the Florida Keys into the Gulf of Mexico.
Satellite data shows Katharine has traveled nearly 29,000 miles since being tagged.