Here are some common examples of rays:
* Stingrays: These are bottom-dwelling fish with a flattened body and a long, whip-like tail that often has a venomous spine.
* Skates: Similar in appearance to stingrays, but with a broader, diamond-shaped body and no venomous spine.
* Manta rays: These are the largest of the rays, with wingspans reaching up to 29 feet. They have a distinctive pair of horn-like cephalic fins near their mouths.
* Electric rays: These rays have the ability to generate an electric shock to stun prey.
So, when someone says "ray," they are referring to a member of the Batoidea order, which includes a variety of different species.