Hawaiian Shark Attack Victim in Critical Condition

Lanikai Beach on the East Coast of Oahu was closed after a 44-year-old man was reportedly attacked by a 10-foot tiger shark.
1:21 | 10/19/15

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Transcript for Hawaiian Shark Attack Victim in Critical Condition
A bystander also killed in the cross fire. A terrifying shark encount person the victim is in critical condition this morning. Matt Gutman has more. Get out of the water! Reporter: Chaos on this Hawaii beach this weekend. Swimmer's in distress. Reporter: The beach on the east coast of oahu closing after a 44-year-old resident was attacked by what eyewitnesses describe as a ten-foot tiger shark. We're looking at the guy right now. He's in bad condition it look like. Reporter: The victim was swimming with a friend a quarter mile offshore, despite warnings on the beach. He fought off the shark, punched him a couple of time. I was screaming help, waving to the people on the shore. Reporter: Two good samaritans, a father and son in canoes, racing in to help. The dad took his shirt off and used it as a tourniquette. Reporter: The victim troushd the hospital in critical condition. This is the sixth shark take in Hawaii this year. 25-year-old surfer colin cook speaking out after losing a leg and several fingers just over a week ago. It had serious power. Reporter: Bystanders on the beach using his surfboard's leash as a tourniquet, likely saving his life. We thank Matt for that story.

This transcript has been automatically generated and may not be 100% accurate.

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