For the second time in two days, a hammerhead shark was spotted in the waters off the La Jolla coast Sunday afternoon, prompting lifeguards to extend a shark advisory that was issued after a hammerhead was spotted in the same area Saturday afternoon.

The 6 to 8 foot long shark was seen by a kayak fisherman who was 1.5 to 2 miles from La Jolla Shores about 12:10 p.m., San Diego Fire-Rescue Department spokesman Lee Swanson said.

The kayaker told lifeguards the hammerhead swam by him in a non-aggressive manner. The water around him was bloody from fish he had caught earlier, and that may have attracted the shark, Swanson said.

The kayaker paddled towards shore and the shark followed him. When he was about 250 yards away from a boat launch, he flagged down a lifeguard rescue boat and pointed out the shark and a nearby swimmer.

The lifeguard crew watched as the shark swam toward the swimmer before suddenly turning toward deep water, Swanson said. It wasn't seen again.

Lifeguards warned beachgoers of the sighting on Sunday, but didn't bar anyone from getting into the water.

Hammerhead shark off La Jolla

A hammerhead shark, described as 8 to 10 feet long, was also seen on Saturday, also off La Jolla Shores, about 1 p.m. Similarly to Sunday's sighting, the shark approached two kayakers who had been fishing in the area and had bled a couple of yellowfin tuna into the water. Swanson said Saturday's sighting was closer to shore.

One of the kayakers, Van Evera, said he and his father could tell the shark was "looking for something to eat." About 50 to 100 people - mostly kayakers, but some swimmers - were in the area at the time.

The two kayakers alerted a group of nearby swimmers of the hammerhead and they headed back to shore. The shark followed the kayakers to the surfline, like it followed the kayaker on Sunday.

Lifeguards searched the area, but the shark wasn't seen again. As a precaution, the beach was closed for the rest of Saturday, although visitors were allowed to wade up to their knees. No one was injured.

Lifeguards will search the ocean off La Jolla Shores for sharks on Monday morning to determine if any other precautions should be taken.