Tragically, even with his heroic efforts and the urgent response that followed, Arlene later died in the hospital due to the injuries she suffered.

Arlene died from her injuriesYouTube/TODAY
“Her arm had been amputated below the elbow,” he said. “At that point I knew it was a big, big shark.”

Christopher Carroll heroically tried to save Arlene’s lifeYouTube/TODAY