SAN DIEGO (CNS) - A reported sighting of a small great white shark about 500 yards off the coast of La Jolla Cove Thursday prompted lifeguards to issue precautionary warnings to swimmers, surfers and divers entering the ocean in the area.

Two scuba divers said they saw the marine predator -- a roughly 5-foot-long specimen -- under roughly 30 feet of water about 1:30 p.m., lifeguard Lt. John Everhart said.

Due to the depth and distance from land at which the pair of women spotted the shark, lifeguards did not consider the animal's possible lingering presence in the area an imminent public threat, according to Everhart.

Still, lifeguards warned all entering the water in the area through the afternoon about the reported sighting as a precaution, he said.