The four-foot adult female was discovered by a resident trapped after nesting on a beach.
The Department of Environment has chosen not to name the beach – as it’s a regular spot used by poachers looking for turtle meat.
After the resident raised the alarm, the DoEs turtle team rushed out and managed to guide the animal back to the sea.
Posting on its Facebook page, the DoE said: “This was a surprising sight for a morning beach walk, a beautiful adult female green turtle had gotten stuck behind high ironshore rocks after nesting and was unable to make her way back to the water.
“Thank you to a concerned resident who found her on the beach this morning and called DoE!”
The social media post continued: “The turtle measured a massive 121 cm curved carapace length (nearly 4 ft. curved shell length) and was previously tagged by the DoE in 2013.
“It takes decades for a turtle to reach this size and it is estimated that less than 1 in 1,000 turtles reach maturity.
“Luckily she was found in time and the DoE turtle team was able to guide her back to the sea.”
If you see a turtle in need of assistance, call the DoE’s Turtle Hotline at 938-NEST (938-6378).
Green turtle facts
When born, green sea turtles are only 2 inches long. But, they grow up to 5 foot in length and can weigh more than 700 puonds, making them the largest of the hard-shell sea turtles.
The dorsal shell of the green turtle, or carapace, is wide, smooth, and brownish-olive in colour.
Green sea turtles are able to hold their breath for hours at a time.
To reach their nesting grounds, green turtles migrate long distances, travelling back to the beaches where they were born.
They lay 100-200 eggs at a time and leave them alone for 2 months before they hatch.