Mary Lee the Shark Back in the Delaware Bay

A 3,400-pound great white shark that returned to the New Jersey coast on Thursday was spotted in the Delaware Bay Friday morning, according to the OCEARCH Shark Tracker.

She was last pinged early Friday morning less than five miles south of Cape May.

The shark is one of more than 100 sharks around the world being tracked by OCEARCH, a nonprofit organization dedicated to shark research.

The shark was spotted off the coast of Cape May County earlier this month before making the trip up to Ocean County in time for Mother’s Day.

She travelled up to New York earlier this week, but came back down south on Thursday.

“Wow! @MaryLeeShark wasting no time headed back South. #southerngirl @OCEARCH @ChrisOCEARCH” tweeted one of the shark’s nearly 16,000 followers Thursday morning.

Mary Lee is 3,456 pounds and 16 feet long, and has traveled almost 20,000 miles since she was first tagged off Cape Cod in September 2012, according to OCEARCH.

The purpose of the OCEARCH tagging is to help scientists gather data about various sharks. Its projects use SPOT tags -- Smart Position and Temperature, which are the only devices capable of real-time tracking of fine and broad scale movement, anywhere in the world, according to the organization.

If you want to follow Mary Lee or any of the apex predators OCEARCH has tagged around the world, visit the Shark Tracker page here.

Reporting by Karen Wall and Tom Davis was used in this report.

(Mary Lee via OCEARCH Twitter page)