The crystal-clear waters around Rottnest Island shimmered under the Saturday morning sun on May 17, 2026. Families splashed in the shallows, tourists snapped photos of the iconic lighthouse, and adventure seekers chased the thrill of the ocean. But just after 9:55 a.m., about one kilometer offshore at Horseshoe Reef, that serene paradise turned into a scene of unimaginable horror. A massive great white shark, estimated at four to five meters long, struck with lethal precision.

Steven “Mattas” Mattaboni, a 38-year-old surveyor from Perth, was in the middle of a friendly spearfishing outing with three close mates when the predator attacked. Experienced, passionate, and deeply attuned to the sea he loved, Steven never saw it coming. His friends watched in terror as the shark clamped onto his lower leg, dragging him under in a frenzy of blood and bubbles. They acted instantly — hauling him aboard their boat, applying pressure to the wound, and racing toward Geordie Bay Jetty while performing desperate CPR. Paramedics and police continued the fight for over 30 minutes on shore, a helicopter hovering overhead, but the injuries were too severe. Steven was pronounced dead at the scene.

Back home in Perth, Shirene Mattaboni, a 33-year-old clinical nurse specialist at Royal Perth Hospital, was preparing for what should have been an ordinary family day. The couple’s two young daughters — one turning three next month, the other just four months old — were waiting for their dad. Steven had promised to return early, his cooler packed with fresh catch from the sea, ready to turn it into a special family meal. “He always said the ocean provided for us,” Shirene would later reflect. But that promise was never kept.

In the hours that followed, as news of the attack spread across Western Australia, Shirene’s world collapsed. Friends delivered the devastating news. What followed was a raw outpouring of grief. Shirene, still in her nursing scrubs, clutched their baby daughter while their toddler asked repeatedly for “Daddy.” Through endless tears, she whispered: “He promised he would come home early with the fruits of his labor from the sea. ‘Wait for me,’ he said with that smile of his. ‘We’ll eat together as a family tonight.’ Please, my love, come back to us. The girls are waiting. I’m waiting.”

“Our hearts are irrevocably broken by the loss of Steven, known affectionately to his mates as ‘Mattas,’” Shirene wrote in her public statement. “Steven was a devoted father to our two beautiful daughters — one who turns three next month and our four-month-old baby. An avid fisherman and spearfisherman who lived and breathed the ocean, he was always in tune with the sea. He was fiercely loyal, endlessly generous, and the kind of man who would give you the shirt off his back. The world has lost a truly one-of-a-kind gentleman, and our daughters have lost an incredible father far too soon.”

Steven Mattaboni wasn’t just another statistic. Born and raised in Perth, he worked as a surveyor but his true calling was the water. As secretary of the Bluewater Freedivers WA club, he organized trips, mentored others, and championed responsible ocean practices. Friends described him as the guy who would stay late to help pack gear, whose laugh could be heard across the waves, and the husband who never missed a bedtime story.

“He lived and breathed the ocean,” Shirene emphasized. On that fateful Saturday, the group was on a low-key outing at Horseshoe Reef — a spot that had always felt safe. That illusion shattered when the great white appeared.

As a clinical nurse specialist, Shirene has spent her career comforting others in crisis. On May 17, she became the one needing comfort. Colleagues rallied around her, but nothing could prepare her for this. She sat by the window that first night, staring at the empty driveway. “She kept replaying his last kiss goodbye,” a friend said. “He hugged the girls extra tight that morning. ‘Daddy’s bringing home dinner,’ he told them.”

The quote that has resonated most deeply has gone viral: the image of a husband’s promise and a family dinner that will never happen. Shirene has requested privacy for her young family while they grieve. “Thank you for the love and support,” her statement concluded. “We are focusing on our girls and honoring Steven’s memory in the way he would want — with love, not fear.”

This tragedy has sparked renewed conversations about shark safety, ocean awareness, and the risks of spearfishing. Steven knew the ocean’s power, yet he embraced it with respect and joy. His legacy lives on in the stories shared by friends, in the love for his daughters, and in the waves he cherished.

Though he cannot return physically, Steven Mattaboni’s spirit remains — in the sea he loved, in the laughter of his daughters, and in the enduring promises that echo in their hearts.