For those who still shiver at the memory of *Jaws*, this real-life ocean tragedy is chilling beyond imagination. Off the coast of New South Wales, Australia, 63-year-old Christine Armstrong, a beloved member of the Tathra Surf Club, was taken by a massive shark during her routine morning swim — and no one realized it until it was too late.

Christine had set out with her regular swim group from Tathra Wharf to Tathra Beach, a 600-meter route she had completed countless times. That morning, however, she told friends she wasn’t feeling well and turned back early. Moments later, swimmers noticed a fin and seabirds circling above. Believing Christine had already returned safely to shore, the group continued — but she never arrived.

The next day, only her goggles, swim cap, and partial remains were found on the beach. Authorities concluded that Christine was taken instantly by a shark estimated to be at least 13 feet long, most likely a great white. Her husband, Rob Armstrong, heartbroken, told reporters: “The shark was such a size and it’s consumed her basically completely, she wouldn’t have even known it happened.”