In a heart-stopping encounter captured on camera, a massive 13- to 15-foot great white shark smashed into a shark cage off Mexico’s Guadalupe Island, severing the divers’ air supply and trapping itself inside with four terrified people below.
The dramatic incident occurred during a cage-diving expedition aboard the Nautilus Explorer, approximately 160 miles west of the Baja California port of Ensenada. What began as a routine shark-viewing trip quickly escalated into a desperate fight for survival as the powerful predator charged the cage.
According to Katie Yonker, operations director for Bluewater Dive Travel, the group—including divemaster Yann and passengers David and Katie B.—was inside an open-topped cage equipped with an upper viewing platform known as a balcony. Air was supplied through a hose from the surface, with an emergency valve inside the cage. A chum bag attached to the cage had been releasing the scent of tuna to attract sharks.
The chaos erupted when the enormous great white charged directly at Yann and Katie B., who were positioned on the exposed balcony. Yann instinctively shoved the shark away, but moments later the animal struck again with devastating force.
“The first minute or so felt like a horrific earthquake underwater, and I kept thinking, ‘We just need to wait this out’,” Yonker recalled. “But in the back of my head I feared the cage would break apart and this would be the end for me.”
The shark smashed into the steel cage, biting through the main air supply hose and triggering a violent explosion of bubbles. It then swam vertically into the balcony area and became wedged inside the main cage, thrashing wildly in an attempt to free itself. The three divers below cowered beneath the massive predator while Yann, whose regulator had been knocked from his mouth, managed to stay above it before ascending to alert the crew.
“We stood, gripping the cage in an attempt to stay upright, while the cage circled back and forth and at one point was at a 45-degree angle,” Yonker wrote.
As the cage was slowly raised toward the surface, the divers faced a new nightmare: escaping with the enraged shark still trapped inside, blocking much of the exit. Visibility was severely limited by clouds of bubbles and blood from the chum bag.
“I could see the boat, but had no idea how I would get around the shark,” Yonker said.
Eventually, all four divers successfully exited the cage and reached the safety of the boat. The crew then freed the shark by securing a rope to its tail, allowing the animal to swim away.
Yonker was adamant that the incident should not be classified as a shark attack. “To be clear, this was in no way a shark attack,” she stated. “It was a shark enticed by the scent of tuna, not humans.”
She added that she hopes the frightening experience will prompt improvements in cage design to prevent similar incidents in the future.
The footage of the encounter, captured by those on board, vividly illustrates the raw power of one of the ocean’s most formidable predators and the inherent risks of close-quarters shark encounters—even in controlled environments.
While the divers emerged shaken but unharmed, the event serves as a powerful reminder of nature’s unpredictability when humans enter the domain of great white sharks.