stingray

/ˈstɪŋˌreɪ/
noun
  1. A flat sea fish with a long, thin tail that can cause a painful sting.
    • We saw a stingray gliding gracefully over the sandy ocean floor.
    • Be careful where you step in shallow water; a stingray might be hiding there.
    • The stingray buried itself in the sand to hide from predators.