Shocking moment two swimmers were bitten by shark and two others injured during Fourth of July celebrations (graphic photos/videos) Shark attacks disrupted Fourth of July celebrations on Thursday at South Padre Island. Two people were taken to the hospital with bites, at least one of them severe, authorities said. Two more were injured after they encountered the shark. Police were called for the attack on the man who was severely bitten around 11 a.m., according to Nikki Soto, the South Padre Island city secretary. He was initially treated at the beach by firefighters and police. The Texas Parks & Wildlife Department said later in a statement that two people were bitten and two more “encountered” the shark but were not seriously hurt. One of the bite victims was taken to a hospital in Brownsville, and the other was “flown out for further treatment.” Based on witness reports and images on social media, Game Warden Capt. Chris Dowdy said authorities believe a single shark about