Annual migration of predators to the north.
Several beaches in South Florida have been closed to swimmers because there are tens of thousands of sharks off the coast, in their annual migration to the north.
''An event that occurs every year - says the lifeguard Palm Beach, Craig Pollock, - but we must also pay attention because there are no dry that take away the animals''
Experts talking about at least 15 thousand sharks, many of which are within 200 meters from the shore.
tony curtis
