Mon Repos beach rangers are expecting a good turtle nesting season this year after the arrival of the first turtle.

Local ranger Cathy Gately says a flat-back turtle's tracks were spotted yesterday morning along the beach in south-east Queensland.

She says they are expecting a good nesting season.

"Usually we get up to 350 individuals along our coast - the majority of those nesting at Mon Repos," she said.

"But we do have incidental nesting at all beaches stretching along from Elliot Heads through to Moore Park.

"Every season we have natural fluctuations but we're thinking that this season - indications are that it should be another good season for us."

Ms Gately says turtle tours officially begin next month.

"Eggs usually take about six to eight weeks to incubate, close to six weeks if it's a nice warm time for them," she said.

"If it's a bit of a cooler time, than it can stretch out to the eight weeks.

"So our flat-back turtles, they're only know to nest within Australia - they're very special turtles for us."

Church bells at the Anglican Christ Church will ring the morning after the first eggs are laid at the beach.