The waters at two of Orange County's most popular beaches were closed Thursday after a shark was spotted and showed what authorities described as aggressive behavior to a surfer.
Large sections of Newport Beach and Huntington Beach were closed down to surfers, swimmers and other water-goers Thursday night. Lifeguards cleared the beaches Thursday evening to check on the shark report.
Newport Beach lifeguard Battalion Chief Mike Halphide told the Orange County Register that the 6-to-8 foot shark acted aggressively by bumping the surfboard of an off-duty lifeguard and lifting it about a foot out of the water in the area of Huntington State Beach.
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A beach visitors told NBC4 the beach was packed at the time of the report.
Lifeguards in boats could not find the shark later Thursday night. Beaches reopened Friday morning.