Listen: Christopher Schwarzenegger's 911 Call from Maria Shriver

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ET has obtained the 911 call concerning Christopher Schwarzenegger's surfing accident in Malibu last Sunday.

In the audio clip, a composed Maria Shriver can be heard divulging details to an emergency dispatch operator for the Los Angeles County Fire Department.

The unfortunate incident occurred at a beach in Malibu as Arnold Schwarzenegger and Maria's 13-year-old son was boogie boarding and suffered a collapsed lung, broken bones and ribs.

Maria has been by his side in ICU at a Los Angeles area hospital as the young man remains in serious condition. The entire Schwarzenegger family has stayed strong during this difficult time and has been extremely supportive in Chris' recovery efforts.