Shark sightings spike near America's beaches as July 4 crowds head to shore for weekend

Shark sightings near U.S. beaches have increased during the Fourth of July weekend, but experts confirm shark bites remain rare. Marine biologist Mike Heithaus advises avoiding murky water and fishing areas while highlighting that sharks typically ignore humans. Regions like Florida's New Smyrna Beach, North Carolina's Outer Banks, and Cape Cod see higher shark activity due to migration, warming waters, and prey availability.