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Loggerhead returns

04 Dec, 2009 09:20 AM
A female loggerhead turtle has made her regular visit to lay eggs on the Manning coastline – making it the southern-most nesting site known for the species along Australia’s east coast.

This week’s visit thrilled residents of Diamond Beach, who will now be holding their breath and hoping for the best outcome, come the end of February.

That’s when the tiny hatchlings – hopefully more than 100 of them – should emerge from under the sand and make their frantic dash to the water’s edge.

The turtle – over a metre long – is known to have visited Diamond Beach to lay four times in the last nine years.

Unfortunately all but five of her young perished in 2005, due to unusually cold conditions. What the fate of the surviving five was after they reached the surf, no-one knows.

Loggerheads are fully protected in Australian waters and are listed as globally endangered, with huge numbers wiped out by a combination of circumstances including longline fishing, prawn trawling, fish and shark netting, being hit by boats, ingesting plastic bags, being plundered for food, and on land by predation of dogs, foxes and intrusion of human development.

“The Manning is extremely fortunate to have this kind of visitor,” National Parks and Wildlife Service ranger Michael Thomas said this week.

“Like many other species of birds and animals we see locally, we in the Manning area are their southern-most range. This loggerhead is the furthest south known example of a nesting site.”

The female would have been born on the same beach, as loggerheads use a ‘magnetic compass’ in their brain to navigate their way back to the area of their birth to lay their eggs.

Michael Thomas estimates her to be well over 20 years old. “I have a suspicion she is much older, but we’ll never really know,” he said.

She came ashore on Tuesday night to lay her clutch, and was still on the beach when early morning walkers were about at daylight. Very soon the VIP visitor had quite an admiring crowd watching from a safe distance, while awaiting a visit by Mr Thomas.

About 7am she returned to the sea, “making hard work of it”, he said, as there was a heavy swell running.

He appealed to locals and visitors to stay well clear of her nesting site, which will not be marked so as not to draw attention to it.

“Hopefully people and their dogs will stay away from the spinifex area of the dunes, to allow the babies to have the best chance possible at making it to the sea.”

If all goes well over the summer holidays, he expects the hatchlings to emerge one night in late February to make their dangerous dash to the water. Their sex will be determined by their incubation temperature, with warmer beaches (above 30 degrees C) producing mostly female hatchlings.

Mr Thomas believes that with climate change and global warming, visits such as this week’s may become a more regular occurrence.

He appealed to any member of the public who sees any type of turtle on a beach to stay well away, but endeavour to contact National Parks staff so that they might monitor its condition and activities.NPWS area manager Kevin Carter said this week’s visit was a “great occurrence” for the Manning.

“We should be doing everything we can to make life better for these endangered creatures,” he said.

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This turtle returned to Diamond Beach to again lay her eggs. The NPWS says the Manning is extremely fortunate to have such a visitor to our shores.
This turtle returned to Diamond Beach to again lay her eggs. The NPWS says the Manning is extremely fortunate to have such a visitor to our shores.

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