A terrifying video was shared online showing a lone swimmer in the Gulf of Mexico being circled by a shark. The woman, at one point, swam directly over the deadly predator unknowingly.

Stan Battles reportedly took the video Wednesday morning from his balcony on the 28th floor of a resort at Panama City Beach, Florida, Panama City News Herald reported. Battles was watching the shark for a couple of hours in the waters until it swam into a clearer area. This is when the woman was spotted nearby who did not notice the shark.

“The woman swims directly over this thing,” he told the outlet. “Directly over it.”

The two-and-a-half-minute video shows the woman swimming in the green waters as the shark, that looks like a dark spot from afar, neared her. The shark appears to stay close to the woman as she swam beside it.

“It was just kind of crazy,” Battles told the Panama City News Herald. “Everyone on the beach, in the water, they had no clue.”

After a while, someone noticed the danger and began yelling “shark” at the swimmer. The woman then swam back to the shore. Battles told the Herald he ran down to the beach to talk to the woman, but she apparently never saw the shark.

“She was just like, ‘I think I’m done with the ocean,’” he said. “I’m just glad no one got hurt."

The video comes just days after a California man died after being attacked by a shark off the west coast of Maui, Hawaii. The man was pulled ashore the Ka'anapali Beach Park area with a leg missing.

Maui Police identified the man as 65-year-old Thomas Smiley, an optometrist who was visiting from Granite Bay, California, with his wife. Smiley was swimming at Honokowai Point, about 60 yards from shore in clear waters, roughly 20 to 25 feet deep when he was attacked.

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The fin of a shark breaks the surface near the 'Miracle' beach in Tarragona city, Spain, Aug. 20, 2007. LLUIS GENE/AFP/Getty Images