A bull shark swimming on a sandy bottom of the Caribbean Sea.Alexis Rosenfeld/Getty ImagesA shark injured four people near South Padre Island, Texas on the Fourth of July.Two people were bitten, and at least one person was taken to the hospital.Shark attacks are rare and Texas has fewer than Florida, California, and other states.Fourth of July celebrations turned bloody when a shark injured several people near South Padre Island, Texas.The interactions included at least two bites, according to ABC affiliate KRGV.