Published: Feb 03, 2011 8:55 PM EST
Updated: Feb 03, 2011 5:56 PM EST

ST. AUGUSTINE, Fla. (AP) - Wildlife officials are trying to figure out what killed a 2-year-old North Atlantic Right Whale off of north Florida's coast.

The whale was found dead and floating in the water on Thursday.

The whale is 30-feet long and weighs 15,000-pounds. Officials say they will perform a necropsy to determine what happened. Officials say they untangled the whale from rope and other debris three other times since Christmas Day. On Jan. 15, they found her in bad condition.

--- Information from: The St. Augustine Record,

 (Copyright 2011 by The Associated Press. All Rights Reserved.)