San Diego beaches from Torrey Pines to south Carlsbad are closed to swimmers and surfers for 72 hours after a shark killed a swimmer in Solana Beach. The closure is expected to be lifted Monday.

Rosenblatt said white shark attacks are very rare. He said there isn't a resident population of white sharks in the area, but female sharks come to the area from the north to give birth. They also swim great distances and have been known to be tagged in Monterey and then turn up in Hawaii.

"The chances of finding this particular shark are very slim," Rosenblatt said.

UPDATE on 04/25/2008 12:48 pm:

The shark is estimated to be 12 to 17 feet long

UPDATE on 04/25/2008 1:26 pm:

The victim has been identified as 66-year old Dave Martin. He is a retired veterenarian from Solana Beach. Martin had been a resident of Solana Beach since 1970.

UPDATE on 04/26/2008 9:46 am:

Details of the victim have emerged as surfers warily get back to business

Donna Johnson Shaw made a peace sign Friday as she joined others at a Solana Beach memorial service after a shark attack that took the life of 66-year-old triathlete David Martin. The county's first fatal shark attack in a half-century focuses worldwide attention on a stretch of coastline with no history of shark activity.