Mary Lee, Great White Shark, Spotted At Jacksonville Beach By Ocearch Shark Tracker (VIDEO)

Mary Lee, a massive great white shark known for her wanderlust, reached a destination last week that made observers uneasy to say the least.

The Ocearch team that had tagged the 16-foot, 3,500-pound shark in September received a ping signal that Mary Lee was within 200 yards of Florida's Jacksonville Beach.

Mary Lee had come way too close for comfort, penetrating the surf break, CNN reports. However, Ocearch chairman Chris Fischer called local police to clear the water until Mary Lee -- named after Fischer's mother -- set up shop further at sea.

While Mary Lee swam away without incident, her migration pattern has intrigued scientists from Ocearch. The organization outfitted her -- along with another great white named Genie -- with a GPS device during an expedition off Cape Cod in September. Just months later, both sharks were found swimming off the Jacksonville coast.

"That is a scary thought," tourist Jennifer Earnest told WOFL after hearing of the shark. "I would be running from that."

Last Thursday, the Florida Times-Union reported that Mary Lee was spotted 18 miles off Fernandina Beach and headed northeast.

"We're trying to solve the basic life history puzzle of where and when do [great whites] feed, where and when do they breed, and where and when do they give birth," Fischer said to CNN. "We want to protect those areas where they're vulnerable."

In the video above, watch Ocearch at work in making perhaps the catch of the century before letting Mary Lee -- in her terrifying magnificence -- once again roam the ocean.

Great white sharks are the largest known predatory fish, according to the World Wildlife Fund. The animals, which can weigh nearly 5,000 pounds, have often been hunted by man in the past. They are listed as vulnerable on the IUCN Red List of Threatened Species.

Check out the Mary Lee tracker at Ocearch's Facebook page.