The family of Torrance Sambo say they remain committed to uncovering the truth behind the 26-year-old's disappearance off the coast of Cairns, more than three years after police called off the official search.
Mr Sambo was last seen on 16 October, 2021, while on a spear fishing trip to Sudbury Reef with a work colleague.
Police reported Mr Sambo became separated from his companion during the dive and failed to return to the boat.
An air and sea operation followed, with emergency services and community members searching more than 135 square kilometres.
Several items were later discovered on the ocean floor near the boat, including a wetsuit, mask, flipper, spear gun and a pair of underwear.
Mr Sambo's body was never recovered.
While some of the items were identified by police as belonging to Mr Sambo, family members have disputed this, saying only one item - the underwear - could be confirmed, and that it came from a spare change of clothes packed in his backpack.
The clothes he was last seen wearing on CCTV, along with personal belongings including his white cap, gold chain, sunglasses and cigarettes, were never located.
A representative from Indigenous Missing Persons Support Services said the absence of physical remains, despite the discovery of multiple items, remains deeply troubling.
"Which in itself is confusing - how do clothes come off and be left, yet no sign of Torrance?" the representative said.
Further concerns have been raised about the timeline.
CCTV footage shows Mr Sambo and his colleague at a service station before heading to the boat ramp.
The colleague is later seen arriving at the ramp alone.
The short driving distance between the two locations has led the family to question why Mr Sambo does not appear on any CCTV at the ramp.
There are also discrepancies around whether the overnight trip had been communicated.
Others involved said the stay aboard the nearby vessel had been pre-arranged.
But Mr Sambo, according to family, had made dinner plans and was expected home that evening.
Queensland Police stated that the family was consulted prior to suspending the search.
Mr Sambo's partner later said she was unaware of who had been consulted, describing the statement as misleading.
"Our search isn't over and will never be over," she said.
Investigators considered the possibility of a shark attack, though no shark was sighted and no blood was seen in the water.
The coroner ultimately supported a theory of drowning followed by shark predation, though questions remain around the conditions at the site, described by locals as clear and shallow, with visibility extending to the ocean floor.
Indigenous Missing Persons Support Services is continuing to call for public information and says more community members have come forward in recent months.
"This case does not make sense to us," the group said.
Anyone with information is encouraged to contact Crimestoppers on 1800 333 000 or reach out to IMPSS directly.
"Please share for Torrance."
