Published: Jul 12, 2012 12:00 AM EDT
Updated: Jul 11, 2012 6:58 PM EDT

GLADES COUNTY, Fla.- For the first time, we're hearing the frantic 911 calls made seconds after an alligator bit off a teenager's arm in Moore Haven on Monday.

Kaleb "Fred" Langdale's friend made the call to 911. In it, you can hear Phillip Knawl terrified and screaming at Langdale from across the river, telling him to get out of the water and asking if he is OK.

"Fred! are you alright, Fred?" Knawl continues, "Fred! Get out of the water!"

Phillip Knawl tells the 911 operator about the disturbing alligator attack he witnessed on the Caloosathchee River Monday.

The 11-foot gator ate part of his friend's right arm.

"Where was he bit at?," the operator asked.

Knawl responded, "We were swimming in the river. He was bit in the middle of the river, but he got out on the other side, on land."

"OK. Where on his body was he bit: leg, arm?," the operator asked more specifically.

"Arm," said Knawl.

Operator: "Is it still attached?"

Knawl: "No. Ugh. Move! Move!"

Operator: "Stay on the phone. I am trying to get the medics in route."

Knawl: "OK. Yes ma'am."   

The hospital says Fred is in good condition. He is scheduled to go into surgery around 5:00 p.m., where doctors will be looking for any signs of infection.

The family has started a website, hoping to get donations to pay for a prosthetic arm. If you would like to donate, click here.