Published: Aug 06, 2010 7:16 PM EDT
Updated: Aug 06, 2010 4:16 PM EDT

COCOA BEACH, Fla. (AP) - A shark sighting sent Cocoa Beach swimmers ashore.

The shark was spotted Thursday afternoon by Brevard County Ocean Rescue staff. Lifeguards had to order about 300 swimmers to get out of the water for at least 30 minutes.

Assistant Chief Eisen Witcher says there was a large number of bait fish pods in the water at the time of the sighting.

Witcher says the 30-minute wait policy is to gauge if the sharks are still around. If they are, the clocks starts over.