As Florida dealt with its own minor shark attacks over the weekend, on the other side of the country there was no sign of a deadly shark that killed a California swimmer Friday.

Despite no sign of the shark, 17 miles of San Diego County coastline remained closed as a precaution Sunday.

Only a few people ignored posted signs warning that the shark could still be below the surface Saturday. The shore was emptier than usual on Solana Beach, where 66-year-old David Martin was killed.

Beaches in Orange and Los Angeles counties were packed with people on a hot day farther north. Lifeguards there were more concerned with riptides than sharks.

Florida Attacks Cause Minor Injuries

Authorities said two surfers were injured in shark attacks in New Smyrna Beach, Fla., in separate incidents on Saturday and Sunday.

The Volusia County Beach Patrol said a 24-year-old man stepped off his surfboard in chest deep water this morning and his right calf was bitten. Capt. Jack Driskell said the man was attacked by a shark. He added that the injuries are not life or limb threatening.

On Saturday, another man drove himself to the hospital after a shark bit his foot while he surfed in New Smyrna Beach.

Mark Pattison sais he was in chest deep water when a shark bit his right foot. He told the beach patrol that the shark let go after he jumped off his board and hit it. Pattison underwent minor surgery for the bite.

Autopsy Confirms Martin Bled To Death

An autopsy showed Martin bled to death from what appeared to be a single bite spanning both upper legs, according to the Medical Examiner's Office and shark experts, reported KNBC-TV in Los Angeles.

The shark that attacked Martin Friday is believed to be a great white, stretching anywhere from 12 to 17 feet long. Experts said the likelihood of finding it is slim.

Martin was training for a triathlon among a group of eight swimmers, all in wetsuits, when he was attacked from below, thrust into the air, then dragged under about 150 yards from shore around 7 a.m. on Friday.

Richard Rosenblatt, professor emeritus at the Scripps Institution of Oceanography, said the shark was almost certainly was an adult Carcharodon carcharias -- a great white -- 12 to 17 feet long.

"I was told the victim was pushed up out of the water in a violent attack," Rosenblatt said.

Such an attack is "typical great white behavior," Rosenblatt said, adding that the victim's wounds were "really quite clean and massive."

In 1994, a woman's body was found with shark bites along Ocean Beach in San Diego. Before that the most recent fatal shark attack in San Diego County was in June 1959 when a free diver was killed.

On Aug. 19, 2003, at Avila Beach in San Luis Obispo County, a woman who regularly swam among sea lions there was fatally attack by what was believed to have been a great white.

The most recent fatal shark attack in California was Aug. 15, 2004, when an abalone diver was attacked in Mendocino County.