Why Are Millions Of Anchovies Mysteriously Gathering Off California Coast?
Description:Curious swimmers and kayakers took to the waters off the coast of La Jolla Wednesday to experience the millions of Northern anchovies that have mysteriously gathered. Helicopter video showed people intermingling with the ever-changing mass of anchovies that spread 100 meters wide in places and 15 to 20 feet deep at times. One expert says this type of thing hasn't happened in about 30 years.(1:59)