Spotted Eagle Rays (Aetobatus narinari) feed on clams, oysters, and gastropods that are buried beneath the sand.    From Wordnik.com.  [Coral reef fish feeding behavior in the Caribbean] Reference

The three most common stingrays are the round stingray, Urolophus halleri, found along the Pacific coast from California to Panama; the blunt-nosed stingray, Dasyatis sayi, found along the eastern Atlantic coast of North, Central, and South America and the spotted eagle ray, Aetobatus narinari, found throughout the tropical waters from the Atlantic to the Pacific. 4.    From Wordnik.com.  [Fish poisonings and envenomations] Reference

The Spotted Eagle Ray (Aetobatus narinari).    From Wordnik.com.  [Florida Keys National Marine Sanctuary] Reference