"This almost certainly was a great white shark," said Richard Rosenblatt of the Scripps Institution for Oceanography. "They normally feed on seals, and they attack from below. [They] make a powerful rush and bite, then pull away."
Rosenblatt added that Martin was "pushed up [and] out of the water" during the attack.
Coastal cities along San Diego's North and Central County will remain on high alert throughout the weekend from south Carlsbad State Beach to Torrey Pines State Beach. The beaches in Solana Beach are closed and will be patrolled throughout the weekend, but they are expected to reopen on Monday morning.
While the city is taking precautions, it reminded residents attacks like Martin's are unusual.
"Even though these instances are a rare occurrence, we should remember that the coastline is a marine environment and it is a shark's natural habitat," said David Ott, Solana Beach City manager and public safety director, according to the city's Web site. "We want people to remain calm and have respect for nature."
In fact, the last fatal shark attack in southern California was in 1959 and since 1926 only 96 attacks have occurred worldwide; seven were fatal.
Blase said he certainly will adhere to the warnings, but he won't let the fatal attack keep him from the beach.
"I'll respect the lifeguards request and stay out of the water for 72 hours, but I'll be back in the water on Monday," he said.