This weekend, two separate hammerhead shark sightings whipped San Diego beaches into a frenzy. The first sighting caused beach closures from La Jolla to Scripps Pier on Saturday after kayakers documented an encounter with an 8- to 10-foot hammerhead at around 1 PM.
The kayakers appeared tense in the video, laughing uncomfortably, as they watched the hammerhead circle them.
After reopening the beaches, second encounter took place on Sunday. This time, a 6- 8-foot hammerhead approached a kayaker around noon about one mile off La Jolla Shores. According to the San Diego Union-Tribune, the shark may have been attracted to blood from fish the kayaker had caught earlier.
The beaches remain open, although officials issued a Shark Advisory.
According to Wikipedia, only three of the ten known species of hammerhead are considered dangerous to humans: the scalloped, great, and smooth hammerheads. As of 2013 there have been 33 attacks, but no fatalities.