Florida woman loses arm in alligator attack, harrowing 911 calls released

• Dina Spann, 58, was attacked by an alligator in Silver River near Ray Wayside Park in Marion County.
• The attack occurred while Spann was swimming with a group over the summer.
• Spann lost her right arm below the elbow and part of a finger on her left hand.
• Newly released 911 calls capture the frantic aftermath of the attack.
• Spann survived the attack but sustained severe injuries.