ANNA MARIA, FL -- The attack happened Sunday afternoon while the man and his children were in the water at Anna Maria Island.
That's when officials say a shark suddenly attacked the man, biting him in the back of the leg.
The man and his family flagged down a passing boater for help.
A family friend explains what the man was doing when the attack happened.
"He was just going down there with his kids because there's a bunch of pelicans and seagulls there that stop at the sandbar, so they wanted to see the seagulls and pelicans," said Melvin Velez.
The man was taken to the hospital. Family members say the shark left a gash about five-to-six inches long