We begin this Saturday night with every beach-goer's worst fear turning very real on this fourth of July holiday weekend. A young man bitten by a great white shark while swimming off the shores of... See More
We begin this Saturday night with every beach-goer's worst fear turning very real on this fourth of July holiday weekend. A young man bitten by a great white shark while swimming off the shores of California. Lifeguards rushing to his rescue as authorities scrambled to clear swimmers out of harm's way, and left behind in the aftermath, a chilling reminder of the dangers in those waters right off the coast of Manhattan beach. ABC's nick watt is there with the latest. Reporter: 9:30 A.M. And a fisherman here on Manhattan beach pier hooked a monster. A young great white shark. Eight feet long. The fisherman fought for 30, 40 minutes until a group of long distance swimmers unwittingly swam right into this battle of man versus shark. Oh, look at him, right -- Reporter: And the shark attacked. He got bit. Oh, he got bit. Reporter: Eric martin saw the injured swimmer brought ashore on this bloody surfboard. His hand came up and around, got the line caught in his hand, brought the shark close to him, right here and there's the story. Reporter: The man was rushed to the hospital, bleeding but conscious. Swimmers were ordered out of the water. Hey! Get out of the water! Shark! Get out of the water! Shark! Reporter: A scene eerily reminiscent of the film that felt our fear Mrs. Than anything. "Jaws." Also set, yep, July 4th weekend. Sightings of juvenile great whites here are becoming increasingly common. Regularly filmed by paddle borders. No one knows for sure while they're here. Maybe the warm water, plentiful fish, the birthing grounds are here offshore perhaps. But one thing is for certain. We are known to have baby great white capital of the world. Right here. And as long as people behave themselves, you know, the shark -- Reporter: It should be fine. It should be fine. Reporter: This on the second reported instance of a juvenile great white attacking a human. The shark was mad, it was fighting for its life. It had a hook in its mouth and the swimmer was in the worst possible place at the worst possible time. My goodness. And it sounds like that swimmer tonight is lucky to be alive. Reporter: He is. It could have been worse. Now, this shark, believe it or not, great whites have baby teeth and this shark was young enough to have baby teeth. Latest we hear from the hospital, the swimmer is in fair condition. Glad it was a baby. We wish him a speedy recovery. Nick, thank you.
This transcript has been automatically generated and may not be 100% accurate.