A fever of cownose rays was spotted off a pier at Myrtle Beach State Park in Myrtle Beach, South Carolina, footage posted in late May shows.The official Myrtle Beach State Park X page published the video with the caption, “Cownose stingrays gracefully swimming off the pier.”Cownose rays, which feed mainly on mollusks and crustaceans, are known to frequent regional waters, according to the South Carolina Aquarium. Credit: Myrtle Beach State Park via Storyful