The U.S. Coast Guard says that former Miami Dolphins fullback Rob Konrad swam nine miles back to shore after falling off his fishing boat.

The U.S. Coast Guard says that former Miami Dolphins fullback Rob Konrad swam nine miles back to shore after falling off his fishing boat, reports the Associated Press.

Konrad had gone fishing alone Wednesday after being dropped off at a Boca Raton, Fla. dock. When Konrad failed to show up to dinner with his friends, the Coast Guard was called, sending a helicopter to look for him.

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According to the Coast Guard, Konrad fell from the 36-foot boat and he started to swim toward shore, spending 10 to 12 hours in the water. He reached the shore and contacted the Palm Beach County Sheriff's Office, which found him at 4:40 a.m. ET on Thursday morning.

Konrad, 38, was taken to a hospital, where he was treated for possible hypothermia and released.

Konrad played college football at Syracuse and was selected in the second round of the 1999 NFL Draft by the Dolphins. He finished his six-year career with 114 rushing yards, 854 receiving yards and seven total touchdowns.

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