DEADLY bull sharks in a lake at a Logan golf course have been captured on film for the first time since the Australia Day floods.

Officials at Carbrook Golf Course had feared the natural disaster had washed away the club's iconic residents, which have brought the facility worldwide fame.

General Manager Scott Wagstaff, nicknamed the "Shark Whisperer", said the sharks have been glimpsed sporadically since the floods but members have been unable to capture any evidence - until now.

"It took a while for someone to actually spot them after the floods and the water clarity is only just getting better now," Wagstaff said.

"The members at the club have been keeping a close eye on the water and were excited when we had some confirmed sightings.

"It is a massive drawcard for the club, which we think is the only one in the world with sharks."

It is thought the sharks, some measuring up to 3m in length, found their way into the lake during the 1996 floods, when the Logan and Albert Rivers spilled onto the course.

They have since grown and bred.

So comfortable in the lake have the sharks become that club officials are able to tease some to the surface to take meat from the end of a stick.

The sharks are just some of the big fish living in the lake, with large Mangrove Jack also known to patrol those waters.

Wagstaff said members used to jump in the lake to retrieve and collect golf balls, but have decided to stay dry in recent years due to the bull sharks, rated as the most dangerous species of shark in the world.

Half a dozen sharks are thought to be living in the water hazard, labelled "Shark Lake".

The club has embraced its guests, changing its logo in 2012 to feature a shark before naming its monthly medal event 'The Carlton Mid Shark Lake Challenge'.