Katarina Zarutskie, 19, was vacationing in the Bahamas with her boyfriend and his family, when she made a decision to take advantage of getting an epic Instagram pic. She told the BBC that a "local resident" who was watching the photo session from the pier encouraged her to float on her back. "What happened was an accident, and I don't want to throw the shark under the bus", Zarutske said.
Seconds later, Zarutskie discovered why swimming with sharks on goal can be a unsafe idea.
The owner of Staniel Cay marina told NBC that the sharks are quite docile, but "can and do bite", especially if they mistake hands or fingers for a bit of tasty, tasty food.
Luckily, she managed to free herself and swam up to some steps to get out of the water - holding her arm so that the blood would not attract other sharks.
Her boyfriend was snapping pictures when the incident took place. She said the shark clamped down on her wrist and pulled her under. Her boyfriend's father was taking photos, and he captured the exact moment one of the sharks bit down on her wrist and pulled her underwater.
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The 19-year-old is due to start a double-degree in nursing and business in Miami, and is no stranger to the ocean, having grown up doing water sports in her native California. Zaruskie said she did not see them.
"They are wild animals, and it's an uncontrollable situation", she said.
"At that point your body has so much adrenaline going and you just have to get out of the situation, but I stayed extremely calm", she says.
The vision shows Ms Brunning right at the water's edge as one of the sharks swims in front of her. She went to the hospital to get treatment for her infected wounds.
She says she was not posing for Instagram when she went into the waters and simply wanted a once in a lifetime experience to be with the animals. She was left with only a scar on her wrist.