There is little chance of privacy when you live below a security camera and above a glass tunnel traversed by hundreds of people each day.
But that doesn't seem to phase Sea Life Sunshine Coast's resident grey nurse sharks Huey and Pallas.
The pair was recently filmed during an intimate moment, which aquarium curator Oli Underwood described as a more "sedate" version of an often brutal mating process.
"The males will swim alongside the female, they'll grab onto one of the pectoral fins ... and then they'll flip the female over," Mr Underwood said.
"That sends them into something we call tonic immobility which basically puts the animal to sleep.
"This can happen a number of times to the same female, so she'll get bites and scars all over ... though it can look a bit rough, that's what sharks have evolved to be able to deal with."
The coupling caused plenty of excitement at the aquarium, especially given the age of the sharks involved.
Huey, Pallas and "third wheel" Patches are estimated to be about 30 years old, which is also the species' average life span.
"These are very old animals ... still very happy, healthy animals so fingers crossed," Mr Underwood said.
"We're watching them very closely really hoping that we're going to get some nice, cute little grey nurse shark pups."
The sharks are filmed around the clock as part of the aquarium's ongoing health monitoring of the critically endangered species — with only about 2,000 left in the wild off Australia's east coast.
"The females will only give birth to pups every two to three years and they'll only give birth to one to two pups ... so it's not what we would consider a rapid reproducer," Mr Underwood said.
The Mooloolaba attraction became one of the first aquariums in Australia to successfully breed grey nurse sharks in 1997.
'Going for it'
The footage was captured within weeks of grey nurse sharks being spotted mating in the wild off the Queensland coast.
Dive operator James Skilbeck Nelson said his crew was amazed to witness the rare moment at the Wolf Rock dive site, near Rainbow Beach.
"We've captured their pre-mating behaviour ... where the male sharks are trying to get in the right position I suppose is one way of saying it," Mr Skilbeck Nelson said.
"But these guys are actually going for it ... everyone was mildly shocked but also just amazed."
The dive operator said they'd also spotted plenty of female grey nurses bearing scars from mating in recent weeks.
"It's obviously going on quite frequently ... [Wolf Rock] is the only known site on the east coast where they come to mate and then to gestate," Mr Skilbeck Nelson said.
"Around December, all the males actually leave and they head off down to New South Wales and the females hang out here, in kind of a big mums' club."
Despite their rough interactions with each other, Mr Skilbeck Nelson said they were a joy to watch in the wild.
"They're considered the labradors of the ocean ... they're really quite timid ... fortunately we're not on the menu, which is great I say — good for business," he said.
