Footage of a beach near St Petersburg in Florida covered in thousands of cerith snails. <br /><br />The video, captured on November 11, shows the whole length of the beach covered in black shells. <br /><br />"I grew up in Florida & have spent most of my life on the water. I have never seen or heard of this happening before," the filmer wrote online.<br /><br />++CLIENTS PLEASE NOTE: STILL PICTURES AVAILABLE ON REQUEST++
