After photos of a shark-like silhouette in the water were circulated, DNER Ranger Corps personnel were activated at Vacía Talega beach in Loíza, where they assessed the coastline, interviewed beachgoers and offered safety guidance. (Facebook via Puertoricogram) By THE STAR STAFF The Natural and Environmental Resources (DNER) Secretary Waldemar Quiles Pérez said Thursday that he activated Ranger Corps personnel at Vacía Talega beach in Loíza after photos of a shark-like silhouette in the water…