Mary Lee is back to enjoy Grand Strand coast

Mary Lee, a 16 ft, 3456 pound Great White Shark, has been moving northward along the South Carolina coast since the weekend.

As of 10:27 a.m. Tuesday morning, Mary Lee was 3-4 miles off the Pawleys Island coast.

The company tracking Mary Lee, Ocearch, is a nonprofit research organization named for a combination of "ocean" and "research."

It is funded by sponsors and donors, and a South Africa expedition was the subject of History Channel's "Shark Wranglers."

Every time Mary Lee's fin breaks the surface, a signal is transmitted to a satellite which shows the shark's location.

The creator of Ocearch tracking, Chris Fischer, says for the first time in history, we are solving a 400 million year old secret.

Ocearch is also taking cultures from the bacteria of the shark's teeth when they tag them.

This bacteria is what causes infections in the limbs of people they bite, which could lead to the loss of the limb.

By studying the bacteria, they hope to come up with an antibiotic to counter the infection.

Click here to track Mary Lee's progress